Books to enrich teaching,
by Frieda M. Heller and Ruth White.
APA Citation
Heller, F. Maurie., White, R. Margaret. (1941). Books to enrich teaching. Columbus, O.: The Ohio state university press.
MLA Citation
Heller, Frieda Maurie, and Ruth Margaret White. Books to Enrich Teaching. Columbus, O.: The Ohio state university press, 1941.
Warning: These citations may not always be complete (especially for serials).