एपीए उद्धरण

Không rõ. (1991). Applications of learning & planning methods. World Scientific.

शिकागो स्टाइल उद्धरण

Không rõ. Applications of Learning & Planning Methods. World Scientific, 1991.

एमएलए उद्धरण

Không rõ. Applications of Learning & Planning Methods. World Scientific, 1991.