Wells, R. H., & Wells, D. C. (1991). All-time favorit lessons. Youth Change.
Cita Chicago Style (17a ed.)Wells, Ruth Herman, y Daniel C. Wells. All-time Favorit Lessons. Woodburn, Oregon: Youth Change, 1991.
Cita MLA (9a ed.)Wells, Ruth Herman, y Daniel C. Wells. All-time Favorit Lessons. Youth Change, 1991.
Precaución: Estas citas no son 100% exactas.