Richards, M. C. (1989). Centering in Pottery, Poetry, and the Person: By Mary Caroline Richards (2nd ed.). Wesleyan Univ. Press.
Cita Chicago (17th ed.)Richards, Mary Caroline. Centering in Pottery, Poetry, and the Person: By Mary Caroline Richards. 2nd ed. Middletown: Wesleyan Univ. Press, 1989.
Cita MLA (8th ed.)Richards, Mary Caroline. Centering in Pottery, Poetry, and the Person: By Mary Caroline Richards. 2nd ed. Wesleyan Univ. Press, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.