Timmer, W. J. (1980). Methode dan obyek sosial agronomi. GRAMEDIA.
Chicago Style (17th ed.) CitationTimmer, W. J. Methode Dan Obyek Sosial Agronomi. GRAMEDIA, 1980.
MLA (8th ed.) CitationTimmer, W. J. Methode Dan Obyek Sosial Agronomi. GRAMEDIA, 1980.
Warning: These citations may not always be 100% accurate.