APA (7th ed.) Citation
Ackroyd, P. (1983). The last testament of Oscar Wilde. Penguin books.
Chicago Style (17th ed.) Citation
Ackroyd, Peter. The Last Testament of Oscar Wilde. New York: Penguin books, 1983.
MLA (9th ed.) Citation
Ackroyd, Peter. The Last Testament of Oscar Wilde. Penguin books, 1983.
Warning: These citations may not always be 100% accurate.