Cita APA (7th ed.)

Gruchy, J. d. (2011). The humanist imperative in South Africa. Academy of Science of South Africa.

Cita Chicago (17th ed.)

Gruchy, John de. The Humanist Imperative in South Africa. Academy of Science of South Africa, 2011.

Cita MLA (9th ed.)

Gruchy, John de. The Humanist Imperative in South Africa. Academy of Science of South Africa, 2011.