Suparno, P. Teori perkembangan kognitif Jean Piaget. Kanisius.
Chicago Style (17th ed.) CitationSuparno, Paul. Teori Perkembangan Kognitif Jean Piaget. Kanisius.
MLA (8th ed.) CitationSuparno, Paul. Teori Perkembangan Kognitif Jean Piaget. Kanisius.
Warning: These citations may not always be 100% accurate.