Citazione Stile APA (7a Edizione)

Powell, J. (1975). Agricultural traditions of the Mount Hagen area. University of Papua New Guinea, Dept. of Geography.

Citazione stile Chigago Style (17a edizione)

Powell, Jocelyn. Agricultural Traditions of the Mount Hagen Area. [Port Moresby]: University of Papua New Guinea, Dept. of Geography, 1975.

Citatione MLA (9a ed.)

Powell, Jocelyn. Agricultural Traditions of the Mount Hagen Area. University of Papua New Guinea, Dept. of Geography, 1975.