Gaya APA

Sasongko, S, M. et al (2003). Tree Seed Management ; Seed Sources, Seed Collection and Seed Handling . Bogor: ICRAF.

Gaya MLA

Sasongko, Singgih, Mahari. et al. "Tree Seed Management ; Seed Sources, Seed Collection and Seed Handling". Bogor: ICRAF, 2003. Text.