Gaya APA
Oyen, ., Xuan, N. (2006).
PROSEA Plant Resources of South-East Asia 19 Essential-oil plants .
JAKARTA:
LIPI press.
Gaya MLA
Oyen, ., Xuan, Nguyen.
"PROSEA Plant Resources of South-East Asia 19 Essential-oil plants".
JAKARTA:
LIPI press,
2006.
Text.