APA (7 वां संस्करण) प्रशस्ति पत्र
Ireland, T. D. (1978). Gelpi's view of life lifelong education. Department of Adult and higher education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Ireland, Timothy D. Gelpi's View of Life Lifelong Education. Manchester, MI.: Department of Adult and higher education, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Ireland, Timothy D. Gelpi's View of Life Lifelong Education. Department of Adult and higher education, 1978.
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