Gaya APA

Umaly, R, C. et al (1992). Proceedings of the symposium on biotechnology for forest tree improvement ,Bogor,Indonesia ,21-23 March 1990 (No.49). Bogor: Seamod Biotrop.

Gaya MLA

Umaly, Ruben, C.. et al. "Proceedings of the symposium on biotechnology for forest tree improvement ,Bogor,Indonesia ,21-23 March 1990". No.49 Bogor: Seamod Biotrop, 1992. Text.