Gibbs, H. (1980). The alcohol industry of the Philippine Islands Part I: A study of some palms of commercial importance with special reference to the saps and their uses [microform]. Photoduplication Service, University of the Philippines Library.
Citazione stile Chigago Style (17a edizione)Gibbs, H.D. The Alcohol Industry of the Philippine Islands Part I: A Study of Some Palms of Commercial Importance with Special Reference to the Saps and Their Uses [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1980.
Citatione MLA (9a ed.)Gibbs, H.D. The Alcohol Industry of the Philippine Islands Part I: A Study of Some Palms of Commercial Importance with Special Reference to the Saps and Their Uses [microform]. Photoduplication Service, University of the Philippines Library, 1980.