APA (7th ed.) Citation

Nohlen, D., Krennerich, M., & Thibaut, B. (1999). Elections in Africa: A data handbook. University Press.

Chicago Style (17th ed.) Citation

Nohlen, Dieter, Michael Krennerich, and Bernhard Thibaut. Elections in Africa: A Data Handbook. Oxford [etc.]: University Press, 1999.

MLA (9th ed.) Citation

Nohlen, Dieter, et al. Elections in Africa: A Data Handbook. University Press, 1999.