Balauag, M. P. (1979). The influence of the extension program of the agricultural educational institutions on tobacco farming in Cagayan Valley.
Chicago-referens (17:e uppl.)Balauag, Mariano Pelagio. The Influence of the Extension Program of the Agricultural Educational Institutions on Tobacco Farming in Cagayan Valley. 1979.
MLA-referens (9:e uppl.)Balauag, Mariano Pelagio. The Influence of the Extension Program of the Agricultural Educational Institutions on Tobacco Farming in Cagayan Valley. 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.