Vance, P. (1977). Developments in broadacre grain sorghum and maize cropping in the Lowlands of P.N.G. and some thoughts on grain production in the Highlands.
Chicago-referens (17:e uppl.)Vance, P.N. Developments in Broadacre Grain Sorghum and Maize Cropping in the Lowlands of P.N.G. and Some Thoughts on Grain Production in the Highlands. 1977.
MLA-referens (9:e uppl.)Vance, P.N. Developments in Broadacre Grain Sorghum and Maize Cropping in the Lowlands of P.N.G. and Some Thoughts on Grain Production in the Highlands. 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.