Cita APA (7th ed.)

MacNab, A. A., Sherf, A. F., & Springer, J. K. (1994). Identifying diseases of vegetables. University Park.

Cita Chicago (17th ed.)

MacNab, Alan A., A. F. Sherf, i J. K. Springer. Identifying Diseases of Vegetables. University Park: University Park, 1994.

Cita MLA (9th ed.)

MacNab, Alan A., et al. Identifying Diseases of Vegetables. University Park, 1994.