Cita APA (7a ed.)

Zaba, B., & Clarke, J. (1994). Environment and population change. Derouaux Ordina Editions.

Cita Chicago Style (17a ed.)

Zaba, Basia, y John Clarke. Environment and Population Change. Liege, Belgium: Derouaux Ordina Editions, 1994.

Cita MLA (9a ed.)

Zaba, Basia, y John Clarke. Environment and Population Change. Derouaux Ordina Editions, 1994.