APA-čujuhus (7. p.)
Esler, W. K., & Esler, M. K. (1984). Teaching elementary science (4th ed.). Wadsworth Pub. Co..
Chicago-čujuhus (17. p.)
Esler, William K., juo Mary K. Esler. Teaching Elementary Science. 4th ed. Belmont, Calif.: Wadsworth Pub. Co., 1984.
MLA-čujuhus (9. p.)
Esler, William K., juo Mary K. Esler. Teaching Elementary Science. 4th ed. Wadsworth Pub. Co., 1984.
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