APA (7e ed.) Bronvermelding

Tumana, C., & Kesavan, V. (1987). The evaluation of polycross hybrids of sweet potato. University of Papua New Guinea.

Chicago (17e ed.) Bronvermelding

Tumana, C.W, en V. Kesavan. The Evaluation of Polycross Hybrids of Sweet Potato. [Port Moresby]: University of Papua New Guinea, 1987.

MLA (9e ed.) Bronvermelding

Tumana, C.W, en V. Kesavan. The Evaluation of Polycross Hybrids of Sweet Potato. University of Papua New Guinea, 1987.