Putong, C. (1937). Specific objectives and contents of vocational education in agriculture in the Philippines: Rice culture. [s.n.].
Chicago-referens (17:e uppl.)Putong, Cecilio. Specific Objectives and Contents of Vocational Education in Agriculture in the Philippines: Rice Culture. Chicago, Ill: [s.n.], 1937.
MLA-referens (9:e uppl.)Putong, Cecilio. Specific Objectives and Contents of Vocational Education in Agriculture in the Philippines: Rice Culture. [s.n.], 1937.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.