Katherine Duncan-Jones, '"Rosis and Lysa": Selections from the Poems of Sir Robert Sidney', ELR, 9 (1979), 240-63

Millicent V. Hay, The Life of Robert Sidney, Earl of Leicester (1563-1626) (London: Associated University Presses, 1984)

The Spenser Encyclopedia, ed. A.C. Hamilton (Toronto: University of Toronto Press, 1990), s.v. 'Sidney, Robert', pp. 657-58

[P.J. Croft], 'Autograph Notebook, Containing an Otherwise Unknown Sequence of Love Poems by Robert Sidney (1563-1620)', Sotheby and Co., 19 November 1974

W. Hilton Kelliher and Katherine Duncan-Jones, 'A Manuscript of Poems by Robert Sidney: Some Early Impressions', British Library Journal, 1 (1975), 107-44

Germaine Warkentin, 'Robert Sidney's "Darcke Offrings": The Making of a Late Tudor Manuscript Canzoniere', Spenser Studies, 12 (1998 for 1992), 37-73

Tom W.N. Parker, Proportional Form in the Sonnets of the Sidney Circle: Loving in Truth (Oxford: Clarendon Press, 1998)

Gary Waller, 'The "Sad Pilgrim": The Poetry of Sir Robert Sidney', Dalhousie Review, 55 (1976), 689-705

Gavin Alexander, 'Five Responses to Sir Philip Sidney' (unpublished doctoral dissertation, University of Cambridge, 1996)

Burgess, Irene Stephanie, 'The Sidneys: Family, Writing, and Subjectivity' (unpublished doctoral dissertation, SUNY Binghamton, 1994)

Leeds Barroll, 'The court of the first Stuart queen', in The Mental World of the Jacobean Court, ed. Linda Levy Peck (Cambridge: C.U.P., 1991), pp. 191-208

Michael G. Brennan, 'Sir Robert Sidney and Sir John Harington of Kelston', Notes and Queries, 232 (1987), 232-37

Emma Marshall Denkinger, 'The Impresa Portrait of Sir Philip Sidney in the National Portrait Gallery', PMLA, 47i (1932), 17-45 [actually Robert Sidney’s portrait]

Anthony Esler, The Aspiring Mind of the Elizabethan Younger Generation (Durham, N.C.: Duke University Press, 1966), pp. 52-58

Lynn Hulse, 'The Musical Patronage of the English Aristocracy, c.1590-1640' (unpublished doctoral dissertation, University of London, 1992), pp. 225-27

J.B. James, 'The other Sidney', History Today, 15 (1965), 183-90

J.C.A. Rathmell, 'Jonson, Lord Lisle, and Penshurst', English Literary Renaissance, 1 (1971), 250-60

Roy Strong, 'The Leicester House Miniatures: Robert Sidney, 1st Earl of Leicester and his Circle', Burlington Magazine, 127 (1985), 694-701

Blair Worden, 'Classical Republicanism and the Puritan Revolution', in History and Imagination: Essays in Honour of H.R. Trevor-Roper, ed. Hugh Lloyd-Jones, Valerie Pearl, and Blair Worden (London: Duckworth, 1981), pp. 182-200