World Education (Organization : U.S.), Keehn, T. B., & Harman, D. (1971). Functional education for family life planning. World Education.
Citace podle Chicago (17th ed.)World Education (Organization : U.S.), Thomas B. Keehn, a David Harman. Functional Education for Family Life Planning. New York: World Education, 1971.
Citace podle MLA (9th ed.)World Education (Organization : U.S.), et al. Functional Education for Family Life Planning. World Education, 1971.
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