एपीए उद्धरण

H J Sachs. (1978). Practical English workbook. New York: D. Van Nostrand.

शिकागो स्टाइल उद्धरण

H J Sachs. Practical English Workbook. New York: D. Van Nostrand, 1978.

एमएलए उद्धरण

H J Sachs. Practical English Workbook. New York: D. Van Nostrand, 1978.