Waltz, S. K. (1967). Handbook of instructional devices for intermediate social studies. Teachers Pub..
Čikaški stil citiranja (17. izdanje)Waltz, Sondra Kay. Handbook of Instructional Devices for Intermediate Social Studies. Darien, Conn.: Teachers Pub., 1967.
MLA način citiranja (8. izdanje)Waltz, Sondra Kay. Handbook of Instructional Devices for Intermediate Social Studies. Teachers Pub., 1967.
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