MLA

Cheema, Zahid A, Muhammad Farooq, and Abdul Wahid. Allelopathy. Springer Berlin Heidelberg, 2013.

APA

Cheema, Z. A, Farooq, M., & Wahid, A. (2013). Allelopathy. Springer Berlin Heidelberg.

Chicago

Cheema, Zahid A., Muhammad Farooq, and Abdul Wahid. Allelopathy. : Springer Berlin Heidelberg, 2013.