(1963). Teacher's manual for interaction and systems: A science unit for the primary grades (Trial ed.). University of California.
Citación estilo ChicagoTeacher's Manual for Interaction and Systems: A Science Unit for the Primary Grades. Trial ed. California: University of California, 1963.
Cita MLATeacher's Manual for Interaction and Systems: A Science Unit for the Primary Grades. Trial ed. University of California, 1963.
Warning: These citations may not always be 100% accurate.