Balauag, M. P. (1979). The influence of the extension program of the agricultural educational institutions on tobacco farming in Cagayan Valley.
Παραπομπή σε μορφή Chicago (17η εκδ.)Balauag, Mariano Pelagio. The Influence of the Extension Program of the Agricultural Educational Institutions on Tobacco Farming in Cagayan Valley. 1979.
Παραπομπή σε μορφή MLA (9th εκδ.)Balauag, Mariano Pelagio. The Influence of the Extension Program of the Agricultural Educational Institutions on Tobacco Farming in Cagayan Valley. 1979.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.