Richards, M. C. (1964). Centering in pottery, poetry, and the person. Wesleyan University.
Chicago-referens (17:e uppl.)Richards, Mary C. Centering in Pottery, Poetry, and the Person. Middletown: Wesleyan University, 1964.
MLA-referens (9:e uppl.)Richards, Mary C. Centering in Pottery, Poetry, and the Person. Wesleyan University, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.