APA (7th ed.) Citation

O'Brien. (1993). How to develop a perfect memory. Headline Book Publishing.

Chicago Style (17th ed.) Citation

O'Brien. How to Develop a Perfect Memory. London: Headline Book Publishing, 1993.

MLA (9th ed.) Citation

O'Brien. How to Develop a Perfect Memory. Headline Book Publishing, 1993.

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