Cita APA (7th ed.)

Janick, J., Schery, R. W., Woods, F. W., & Ruttan, V. W. (1969). Plant science: An introduction to world crops. W. H. Freeman.

Cita Chicago (17th ed.)

Janick, Jules, Robert W. Schery, Franck W. Woods, i Vernon W. Ruttan. Plant Science: An Introduction to World Crops. San Francisco: W. H. Freeman, 1969.

Cita MLA (9th ed.)

Janick, Jules, et al. Plant Science: An Introduction to World Crops. W. H. Freeman, 1969.