Queen, E. (1966). Ellery Queen's 20th anniversary annual: 20 stories from Ellery Queen's mystery magazine. Gollancz.
Chicago Style (17th ed.) CitationQueen, Ellery. Ellery Queen's 20th Anniversary Annual: 20 Stories from Ellery Queen's Mystery Magazine. London: Gollancz, 1966.
MLA (8th ed.) CitationQueen, Ellery. Ellery Queen's 20th Anniversary Annual: 20 Stories from Ellery Queen's Mystery Magazine. Gollancz, 1966.
Warning: These citations may not always be 100% accurate.