APA-ийн эшлэл(7 дахь хэвлэлт)

Richards, M. C. (1989). Centering in pottery, poetry, and the person (2nd ed.). Wesleyan University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Richards, Mary Caroline. Centering in Pottery, Poetry, and the Person. 2nd ed. Middletown, Conn.: Wesleyan University Press, 1989.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Richards, Mary Caroline. Centering in Pottery, Poetry, and the Person. 2nd ed. Wesleyan University Press, 1989.