University, I. S. (1980). upgrading competencies of tobacco industry development workers: Training manual, Isabela 7-17 July 1980. Isabela State University.
Chicago Style (17th ed.) CitationUniversity, Isabela State. Upgrading Competencies of Tobacco Industry Development Workers: Training Manual, Isabela 7-17 July 1980. Isabela State University, 1980.
MLA (8th ed.) CitationUniversity, Isabela State. Upgrading Competencies of Tobacco Industry Development Workers: Training Manual, Isabela 7-17 July 1980. Isabela State University, 1980.
Warning: These citations may not always be 100% accurate.