APA (7th ed.) Citation

Nguyen & Oyen. (1999). PLANT resources of South-East Asia, no. 19: Essential-oil plants. PROSEA.

Chicago Style (17th ed.) Citation

Nguyen and Oyen. PLANT Resources of South-East Asia, No. 19: Essential-oil Plants. Bogor, Indonesia: PROSEA, 1999.

MLA (9th ed.) Citation

Nguyen and Oyen. PLANT Resources of South-East Asia, No. 19: Essential-oil Plants. PROSEA, 1999.