Gaya APA

Dung, L, P, A, O, A, N, X. (1999). Prosea " Plant Resources of South-East Asia 19 " ( Essential - oil plants ) . Bogor: Prosea network office.

Gaya MLA

Dung, L., P., A., Oyen, And, Nguyen, Xuan. "Prosea " Plant Resources of South-East Asia 19 " ( Essential - oil plants )". Bogor: Prosea network office, 1999. Text.