PROGRAMMED. (1970). Programmed Workbook English 900. Jilid 1-6.
Chicago Style (17th ed.) CitationPROGRAMMED. Programmed Workbook English 900. Jilid 1-6. 1970.
MLA (8th ed.) CitationPROGRAMMED. Programmed Workbook English 900. Jilid 1-6. 1970.
Warning: These citations may not always be 100% accurate.