Παραπομπή APA

Lal, R., & Stewart, B. A. (2012). World soil resources and food security. CRC Press.

Παραπομπή Chicago Style

Lal, R., και B. A. Stewart. World Soil Resources and Food Security. Boca Raton: CRC Press, 2012.

Παραπομπή MLA

Lal, R., και B. A. Stewart. World Soil Resources and Food Security. CRC Press, 2012.