Cita APA (7a ed.)

Fryer, J. D., & Makepeace, R. (1972). Weed control handbook (7th edition.). Blackwell.

Cita Chicago Style (17a ed.)

Fryer, J. D., y R.J Makepeace. Weed Control Handbook. 7th edition. Oxford: Blackwell, 1972.

Cita MLA (8a ed.)

Fryer, J. D., y R.J Makepeace. Weed Control Handbook. 7th edition. Blackwell, 1972.