Citazione Stile APA (7a Edizione)

Keehn, T. B. (1971). Functional education for family life planning: A program plan. World Education.

Citazione stile Chigago Style (17a edizione)

Keehn, Thomas B. Functional Education for Family Life Planning: A Program Plan. New York: World Education, 1971.

Citatione MLA (8a ed.)

Keehn, Thomas B. Functional Education for Family Life Planning: A Program Plan. World Education, 1971.