Cita APA (7a ed.)

Grundlingh, A., & Smith, K. (1988). Positive history (1. publ.). Baobab.

Cita Chicago Style (17a ed.)

Grundlingh, A., y Ken Smith. Positive History. 1. publ. Johannesburg: Baobab, 1988.

Cita MLA (9a ed.)

Grundlingh, A., y Ken Smith. Positive History. 1. publ. Baobab, 1988.