APA-referens (7:e uppl.)

Ojha T.P, M. A. Principles of Agricultural Engineering Vol II (5th.). 2020.

Chicago-referens (17:e uppl.)

Ojha T.P, Michael A.M. Principles of Agricultural Engineering Vol II. 5th. New Delhi: 2020.

MLA-referens (9:e uppl.)

Ojha T.P, Michael A.M. Principles of Agricultural Engineering Vol II. 5th. 2020.