APA (7th ed.) Citation

Hawkins, E. K. (1970). The principles of development aid. Penguin Books.

Chicago Style (17th ed.) Citation

Hawkins, Edward K. The Principles of Development Aid. Harmondsworth [etc.]: Penguin Books, 1970.

MLA (9th ed.) Citation

Hawkins, Edward K. The Principles of Development Aid. Penguin Books, 1970.