Cita APA (7a ed.)

Onakpa, M. M., Njan, A. A., & Kalu, O. C. (2018). A Review of Heavy Metal Contamination of Food Crops in Nigeria. Ubiquity Press.

Cita Chicago Style (17a ed.)

Onakpa, Michael Monday, Anoka Ayembe Njan, y Ogbureke Chidiebere Kalu. A Review of Heavy Metal Contamination of Food Crops in Nigeria. Ubiquity Press, 2018.

Cita MLA (8a ed.)

Onakpa, Michael Monday, et al. A Review of Heavy Metal Contamination of Food Crops in Nigeria. Ubiquity Press, 2018.