Jost, W. (1950). Tentatice course of study in Social Studies: Eighth grade - junior high school ([Stand:] September, 1950.). Sacramento City Unified School District.
Citazione stile Chigago Style (17a edizione)Jost, Wilbur. Tentatice Course of Study in Social Studies: Eighth Grade - Junior High School. [Stand:] September, 1950. Sacramento, Calif: Sacramento City Unified School District, 1950.
Citatione MLA (9a ed.)Jost, Wilbur. Tentatice Course of Study in Social Studies: Eighth Grade - Junior High School. [Stand:] September, 1950. Sacramento City Unified School District, 1950.
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