Ng, H. G. (1980). Allelopathic effects of Chromolaena odorata (L.) [microform]. Photoduplication Service, University of the Philippines Library.
Chicago Style aipamenaNg, Huang Gieh. Allelopathic Effects of Chromolaena Odorata (L.) [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1980.
MLA aipamenaNg, Huang Gieh. Allelopathic Effects of Chromolaena Odorata (L.) [microform]. Photoduplication Service, University of the Philippines Library, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.