APA (7th ed.) Citation

Porter, A. K. (1929). The seven who slept: By A. Kingsley Porter. Williams & Norgate.

Chicago Style (17th ed.) Citation

Porter, Arthur Kingsley. The Seven Who Slept: By A. Kingsley Porter. London: Williams & Norgate, 1929.

MLA (9th ed.) Citation

Porter, Arthur Kingsley. The Seven Who Slept: By A. Kingsley Porter. Williams & Norgate, 1929.

Warning: These citations may not always be 100% accurate.