APA-čujuhus (7. p.)
Ireland, T. D. (1978). Gelpi's view of life lifelong education. Department of Adult and higher education.
Chicago-čujuhus (17. p.)
Ireland, Timothy D. Gelpi's View of Life Lifelong Education. Manchester, MI.: Department of Adult and higher education, 1978.
MLA-čujuhus (9. p.)
Ireland, Timothy D. Gelpi's View of Life Lifelong Education. Department of Adult and higher education, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.