APA-ийн эшлэл(7 дахь хэвлэлт)

Calhoun, D. L. (2023). Changing seasons: A language arts curriculum for healthy aging (Revised edition.). Purdue University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Calhoun, Denise L. Changing Seasons: A Language Arts Curriculum for Healthy Aging. Revised edition. West Lafayette, Indiana: Purdue University Press, 2023.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Calhoun, Denise L. Changing Seasons: A Language Arts Curriculum for Healthy Aging. Revised edition. Purdue University Press, 2023.