Pennell, M. E., & Cusack, A. M. (1932). The teacher's manual for the Pennell and Cusack pre-primers (A reprint from "The Teachers' manual for the first grade," revised edition.). Ginn and Company.
Chicago-referens (17:e uppl.)Pennell, Mary E., och Alice M. Cusack. The Teacher's Manual for the Pennell and Cusack Pre-primers. A reprint from "The Teachers' manual for the first grade," revised edition. Boston: Ginn and Company, 1932.
MLA-referens (8:e uppl.)Pennell, Mary E., och Alice M. Cusack. The Teacher's Manual for the Pennell and Cusack Pre-primers. A reprint from "The Teachers' manual for the first grade," revised edition. Ginn and Company, 1932.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.