Citace podle APA (7th ed.)

Iowa State College. Agricultural Extension Dept & Iowa State College. Agricultural Extension Dept. Schools Section. (1912). School circular. Dept. of Agricultural Extension, Schools Section.

Citace podle Chicago (17th ed.)

Iowa State College. Agricultural Extension Dept a Iowa State College. Agricultural Extension Dept. Schools Section. School Circular. Ames, Iowa: Dept. of Agricultural Extension, Schools Section, 1912.

Citace podle MLA (8th ed.)

Iowa State College. Agricultural Extension Dept a Iowa State College. Agricultural Extension Dept. Schools Section. School Circular. Dept. of Agricultural Extension, Schools Section, 1912.

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