KUMAR, P. '. P. K. (2020). Irrigation practices and sustainable agriculture. Discovery Publishers.
Chicago-viite (17. p.)KUMAR, Prasnn 'Bharti' Pawan Kumar. Irrigation Practices and Sustainable Agriculture. Discovery Publishers, 2020.
MLA-viite (9. p.)KUMAR, Prasnn 'Bharti' Pawan Kumar. Irrigation Practices and Sustainable Agriculture. Discovery Publishers, 2020.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.