Wetzel, C. F., & Hollinger, E. C. (1931). 4-H club work in New Mexico. New Mexico College of Agriculture and Mechanic Arts, Agricultural Extension Service.
Lua i Stíl Chicago (17ú heag.)Wetzel, Carolyn F., agus E. C. Hollinger. 4-H Club Work in New Mexico. New Mexico: New Mexico College of Agriculture and Mechanic Arts, Agricultural Extension Service, 1931.
Lua MLA (8ú heag.)Wetzel, Carolyn F., agus E. C. Hollinger. 4-H Club Work in New Mexico. New Mexico College of Agriculture and Mechanic Arts, Agricultural Extension Service, 1931.
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