Brooke, H., & Helen Brooke. (2000). Mystery in London. Oxford: Oxford University Press.
Chicago Style aipamenaBrooke, Helen, và Helen Brooke. Mystery in London. Oxford: Oxford University Press, 2000.
MLA aipamenaBrooke, Helen, và Helen Brooke. Mystery in London. Oxford: Oxford University Press, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.