एपीए उद्धरण

Picard, M. D. (1975). Grit and clay. Elsevier scientific publishing.

शिकागो स्टाइल उद्धरण

Picard, M. D. Grit and Clay. New york: Elsevier scientific publishing, 1975.

एमएलए उद्धरण

Picard, M. D. Grit and Clay. Elsevier scientific publishing, 1975.