APA (7e ed.) Bronvermelding

Bradfield, D. J. (1966). Guide to extension training. Food and Agriculture Organization of the United Nations.

Chicago (17e ed.) Bronvermelding

Bradfield, D. J. Guide to Extension Training. Rome: Food and Agriculture Organization of the United Nations, 1966.

MLA (8e ed.) Bronvermelding

Bradfield, D. J. Guide to Extension Training. Food and Agriculture Organization of the United Nations, 1966.