APA (7th ed.) Citation

HUMPHREY, J., & Humphrey, F. (1990). How to get more done. Kogan Page.

Chicago Style (17th ed.) Citation

HUMPHREY, John, and Fiona Humphrey. How to Get More Done. London: Kogan Page, 1990.

MLA (8th ed.) Citation

HUMPHREY, John, and Fiona Humphrey. How to Get More Done. Kogan Page, 1990.

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