Não informado. (1969). Issues today: The magazine for high school social studies. American Education Publications, Xerox Education Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Issues Today: The Magazine for High School Social Studies. Columbus, Ohio: American Education Publications, Xerox Education Group, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Issues Today: The Magazine for High School Social Studies. American Education Publications, Xerox Education Group, 1969.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.