Richards, M. C. (1989). Centering in Pottery, Poetry, and the Person: By Mary Caroline Richards (2nd ed.). Wesleyan Univ. Press.
Lua i Stíl Chicago (17ú heag.)Richards, Mary Caroline. Centering in Pottery, Poetry, and the Person: By Mary Caroline Richards. 2nd ed. Middletown: Wesleyan Univ. Press, 1989.
Lua MLA (8ú heag.)Richards, Mary Caroline. Centering in Pottery, Poetry, and the Person: By Mary Caroline Richards. 2nd ed. Wesleyan Univ. Press, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.