Gaya APA

Swarbrick, J. (1991). Proceedings of the thirteenth : Asian pacific weed science society conference, Jakarta, Indonesia 15-18 october 1991 volume 1 . Jakarta: Asian Pacific Weed Science Society and Weed Science Society of Indonesia.

Gaya MLA

Swarbrick, J.T.. "Proceedings of the thirteenth : Asian pacific weed science society conference, Jakarta, Indonesia 15-18 october 1991 volume 1". Jakarta: Asian Pacific Weed Science Society and Weed Science Society of Indonesia, 1991. Text.