Lua APA (7ú heag.)

BENT, R. K., & UNRUH, A. (1969). Secondary school curriculum. D.C. Heath and co.

Lua i Stíl Chicago (17ú heag.)

BENT, Rudyard K., agus Adolph UNRUH. Secondary School Curriculum. Lexington: D.C. Heath and co, 1969.

Lua MLA (9ú heag.)

BENT, Rudyard K., agus Adolph UNRUH. Secondary School Curriculum. D.C. Heath and co, 1969.

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