एपीए उद्धरण

Lange, E. (1975). German in 20 Lessons. Collins.

शिकागो स्टाइल उद्धरण

Lange, Evac. German in 20 Lessons. London: Collins, 1975.

एमएलए उद्धरण

Lange, Evac. German in 20 Lessons. Collins, 1975.