Davidson Films & Piaget, J. (1976). Piaget's developmental theory: Formal reasoning patterns [videorecording]. Davidson Films.
Citace podle Chicago (17th ed.)Davidson Films a Jean Piaget. Piaget's Developmental Theory: Formal Reasoning Patterns [videorecording]. [Davis, Calif.]: Davidson Films, 1976.
Citace podle MLA (9th ed.)Davidson Films a Jean Piaget. Piaget's Developmental Theory: Formal Reasoning Patterns [videorecording]. Davidson Films, 1976.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..