एपीए उद्धरण

Pahl, G. .., & Wallace, K. B. Engineering design: A systematic approach (3rd ed.).

शिकागो स्टाइल उद्धरण

Pahl, G ...[et.al], और Ken Blessing Wallace. Engineering Design: A Systematic Approach. 3rd ed.

एमएलए उद्धरण

Pahl, G ...[et.al], और Ken Blessing Wallace. Engineering Design: A Systematic Approach. 3rd ed.