एपीए उद्धरण

Legge, D. (1975). Cognitive Development. Methuen.

शिकागो स्टाइल उद्धरण

Legge, David. Cognitive Development. London: Methuen, 1975.

एमएलए उद्धरण

Legge, David. Cognitive Development. Methuen, 1975.