Cita APA (7a ed.)

Hubert, M. (1961). Guide to the chemicals used in crop protection (4th edition.). Canada Department of Agriculture. Research Branch.

Cita Chicago Style (17a ed.)

Hubert, Martin. Guide to the Chemicals Used in Crop Protection. 4th edition. Ottawa: Canada Department of Agriculture. Research Branch, 1961.

Cita MLA (8a ed.)

Hubert, Martin. Guide to the Chemicals Used in Crop Protection. 4th edition. Canada Department of Agriculture. Research Branch, 1961.