Elementary Science Study (Education Development Center) & Gillmor, M. S. (1971). Teacher's guide for Starting from seeds: A study unit. Webster Division, McGraw-Hill Book Co..
Chicago-referens (17:e uppl.)Elementary Science Study (Education Development Center) och Mary S. Gillmor. Teacher's Guide for Starting from Seeds: A Study Unit. New York: Webster Division, McGraw-Hill Book Co., 1971.
MLA-referens (8:e uppl.)Elementary Science Study (Education Development Center) och Mary S. Gillmor. Teacher's Guide for Starting from Seeds: A Study Unit. Webster Division, McGraw-Hill Book Co., 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.