Cita APA (7a ed.)

Robertson, G. P. (1999). Standard soil methods for long-term ecological research. Oxford University Press.

Cita Chicago Style (17a ed.)

Robertson, G. P. Standard Soil Methods for Long-term Ecological Research. New York: Oxford University Press, 1999.

Cita MLA (9a ed.)

Robertson, G. P. Standard Soil Methods for Long-term Ecological Research. Oxford University Press, 1999.