Citazione Stile APA (7a Edizione)

Duignan, P., & Conover, H. F. (1971). Guide to research and reference works on Sub-Saharan Africa. Hoover Institution Press, Stanford University.

Citazione stile Chigago Style (17a edizione)

Duignan, Peter, e Helen Field Conover. Guide to Research and Reference Works on Sub-Saharan Africa. Stanford, Calif.: Hoover Institution Press, Stanford University, 1971.

Citatione MLA (8a ed.)

Duignan, Peter, e Helen Field Conover. Guide to Research and Reference Works on Sub-Saharan Africa. Hoover Institution Press, Stanford University, 1971.