Gaya APA

Tumisem, ., Sriwanto, S. (2002). Biosistematik Tumbuhan . Purwokerto: FKIP UMP.

Gaya MLA

Tumisem, ., Sriwanto, Sigid. "Biosistematik Tumbuhan". Purwokerto: FKIP UMP, 2002. Text.