Townshend-Zellner, N., & Lane, S. (1967). A resource document for a high school course in the United States economy. California State Dept. of Education.
Chicago-referens (17:e uppl.)Townshend-Zellner, Norman, och Sylvia Lane. A Resource Document for a High School Course in the United States Economy. [Sacramento: California State Dept. of Education, 1967.
MLA-referens (9:e uppl.)Townshend-Zellner, Norman, och Sylvia Lane. A Resource Document for a High School Course in the United States Economy. California State Dept. of Education, 1967.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.