APA (7th ed.) Citation

Cramer, J. (1971). Some notes on the population of Kenya. [publisher not identified].

Chicago Style (17th ed.) Citation

Cramer, J. Some Notes on the Population of Kenya. [Nairobi]: [publisher not identified], 1971.

MLA (9th ed.) Citation

Cramer, J. Some Notes on the Population of Kenya. [publisher not identified], 1971.