Philippines (Commonwealth). Office of Adult Education, Philippines (Republic). Bureau of Public Schools, & Division of Adult Education. (1938). Philippine adult education series. Project no. 1- ([Bikol language edition].). Bureau of Print.
Style de citation Chicago (17e éd.)Philippines (Commonwealth). Office of Adult Education, Philippines (Republic). Bureau of Public Schools, et Division of Adult Education. Philippine Adult Education Series. Project No. 1-. [Bikol language edition]. Manila: Bureau of Print, 1938.
Style de citation MLA (9e éd.)Philippines (Commonwealth). Office of Adult Education, et al. Philippine Adult Education Series. Project No. 1-. [Bikol language edition]. Bureau of Print, 1938.
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