एपीए उद्धरण

Wohlbier, R. H. (1987). Bulk port development, design and operation. Trans tech.

शिकागो स्टाइल उद्धरण

Wohlbier, Reinhard H. Bulk Port Development, Design and Operation. G D R: Trans tech, 1987.

एमएलए उद्धरण

Wohlbier, Reinhard H. Bulk Port Development, Design and Operation. Trans tech, 1987.