Sims, M. S. S. (1936). The natural history of a social institution: The Young women's Christian association. The Woman's press.
Dyfyniad Arddull ChicagoSims, Mary Sophia Stevens. The Natural History of a Social Institution: The Young Women's Christian Association. New York: The Woman's press, 1936.
Dyfyniad MLASims, Mary Sophia Stevens. The Natural History of a Social Institution: The Young Women's Christian Association. The Woman's press, 1936.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.