Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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