David, I. P. (1977). Development of a statistical model for agricultural surveys in the Philippines. University of the Philippines Library.
Chicago-Zitierstil (17. Ausg.)David, Isidro P. Development of a Statistical Model for Agricultural Surveys in the Philippines. Quezon City: University of the Philippines Library, 1977.
MLA-Zitierstil (9. Ausg.)David, Isidro P. Development of a Statistical Model for Agricultural Surveys in the Philippines. University of the Philippines Library, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.