Esler, W. K., & Esler, M. K. (1996). Teaching elementary science (7th ed.). Wadsworth Pub. Co..
Chicago-čujuhus (17. p.)Esler, William K., juo Mary K. Esler. Teaching Elementary Science. 7th ed. Belmont: Wadsworth Pub. Co., 1996.
MLA-čujuhus (9. p.)Esler, William K., juo Mary K. Esler. Teaching Elementary Science. 7th ed. Wadsworth Pub. Co., 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.