APA (7e ed.) Bronvermelding

Wak, J., & Healey, P. (1979). Village based projects and rural development in Kala village, Papua New Guinea. The United Nations University.

Chicago (17e ed.) Bronvermelding

Wak, John, en Patrick Healey. Village Based Projects and Rural Development in Kala Village, Papua New Guinea. [Tokyo ]: The United Nations University, 1979.

MLA (9e ed.) Bronvermelding

Wak, John, en Patrick Healey. Village Based Projects and Rural Development in Kala Village, Papua New Guinea. The United Nations University, 1979.