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-viite (17. p.)Elementary Science Study (Education Development Center) ja Mary S. Gillmor. Teacher's Guide for Starting from Seeds: A Study Unit. New York: Webster Division, McGraw-Hill Book Co., 1971.
MLA-viite (8. p.)Elementary Science Study (Education Development Center) ja Mary S. Gillmor. Teacher's Guide for Starting from Seeds: A Study Unit. Webster Division, McGraw-Hill Book Co., 1971.
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