APA (7e ed.) Bronvermelding

Não informado. (1970). Extension Bulletin. Asian and Pacific Council, Food and Fertilizer Technology Center.

Chicago (17e ed.) Bronvermelding

Não informado. Extension Bulletin. Taipei: Asian and Pacific Council, Food and Fertilizer Technology Center, 1970.

MLA (8e ed.) Bronvermelding

Não informado. Extension Bulletin. Asian and Pacific Council, Food and Fertilizer Technology Center, 1970.

Let op: Deze citaties zijn niet altijd 100% accuraat.