APA Citation

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

Chicago Style Citation

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

MLA Citation

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

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