Cita APA (7a ed.)

Gardner, R. (1981). A primary history of Botswana (6. impression.). Longman Penguin Southern Africa.

Cita Chicago Style (17a ed.)

Gardner, Roy. A Primary History of Botswana. 6. impression. Cape Town [u.a.]: Longman Penguin Southern Africa, 1981.

Cita MLA (9a ed.)

Gardner, Roy. A Primary History of Botswana. 6. impression. Longman Penguin Southern Africa, 1981.