Cita APA (7th ed.)

Whitsell, R. H. (1989). Propagating avocados: Principles and techniques of nursery and field grafting. University of California.

Cita Chicago (17th ed.)

Whitsell, R. H. Propagating Avocados: Principles and Techniques of Nursery and Field Grafting. Oakland: University of California, 1989.

Cita MLA (9th ed.)

Whitsell, R. H. Propagating Avocados: Principles and Techniques of Nursery and Field Grafting. University of California, 1989.