Cita APA

Ashman, M. R., & Puri, G. (2002). Essential soil science: A clear and concise introduction to soil science. Malden, Mass: Blackwell.

Citación estilo Chicago

Ashman, Mark R., y Geeta Puri. Essential Soil Science: A Clear and Concise Introduction to Soil Science. Malden, Mass: Blackwell, 2002.

Cita MLA

Ashman, Mark R., y Geeta Puri. Essential Soil Science: A Clear and Concise Introduction to Soil Science. Malden, Mass: Blackwell, 2002.