APA (7th ed.) Citation

Lipton & Longhurst. (1989). New seeds and poor people. Unwin Hyman.

Chicago Style (17th ed.) Citation

Lipton and Longhurst. New Seeds and Poor People. London: Unwin Hyman, 1989.

MLA (9th ed.) Citation

Lipton and Longhurst. New Seeds and Poor People. Unwin Hyman, 1989.