APA Style
Widuri, R., Welzen, P, V. (1998).
A Revision of The Genus Cephalomappa (Euphorbiaceae) in Malesia .
Jakarta:
Reinwardtia.
MLA Style
Widuri, Ratna., Welzen, Peter, Van.
"A Revision of The Genus Cephalomappa (Euphorbiaceae) in Malesia".
Jakarta:
Reinwardtia,
1998.
Text.