APA (7th ed.) Citation

Bruyn, H. (1980). Six studies in subsistence agriculture. Dept. of Primary Industry.

Chicago Style (17th ed.) Citation

Bruyn, H. Six Studies in Subsistence Agriculture. Port Moresby: Dept. of Primary Industry, 1980.

MLA (9th ed.) Citation

Bruyn, H. Six Studies in Subsistence Agriculture. Dept. of Primary Industry, 1980.