Jessop, J. P. 1964. A taxonomic revision of the genus asparagus in South Africa [Thesis]. Department of Agriculture: University of Cape Town.

Jessop, J. P. (1964). A taxonomic revision of the genus asparagus in South Africa. (Thesis). University of Cape Town ,Faculty of Science ,Agriculture. Retrieved from http://hdl.handle.net/11427/28325

Jessop, J P. "A taxonomic revision of the genus asparagus in South Africa." Thesis., University of Cape Town ,Faculty of Science ,Agriculture, 1964. http://hdl.handle.net/11427/28325

Jessop JP. A taxonomic revision of the genus asparagus in South Africa. [Thesis]. University of Cape Town ,Faculty of Science ,Agriculture, 1964 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/28325