Philippines (Commonwealth) Bureau of Science & Laya, V. G. (1941). Leather manufacture and its possibilities in the Philippines. Bureau of Print.
Chicago-referens (17:e uppl.)Philippines (Commonwealth) Bureau of Science och Vicente Gregorio Laya. Leather Manufacture and Its Possibilities in the Philippines. Manila: Bureau of Print, 1941.
MLA-referens (9:e uppl.)Philippines (Commonwealth) Bureau of Science och Vicente Gregorio Laya. Leather Manufacture and Its Possibilities in the Philippines. Bureau of Print, 1941.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.