APA stil citiranja

Lewis, L. G. (1961). The Credit System in Colleges and Universities: The Credit System in Colleges and Universities. Washington: U. S. Department of Health, Education, and Welfare.

Chicago stil citiranja

Lewis, Lanora G. The Credit System in Colleges and Universities: The Credit System in Colleges and Universities. Washington: U. S. Department of Health, Education, and Welfare, 1961.

MLA stil citiranja

Lewis, Lanora G. The Credit System in Colleges and Universities: The Credit System in Colleges and Universities. Washington: U. S. Department of Health, Education, and Welfare, 1961.