एपीए उद्धरण

Marx,Karl, & Engels,Frederick. (1969). Selected works in three volumes. Progress.

शिकागो स्टाइल उद्धरण

Marx,Karl, और Engels,Frederick. Selected Works in Three Volumes. Moscow: Progress, 1969.

एमएलए उद्धरण

Marx,Karl, और Engels,Frederick. Selected Works in Three Volumes. Progress, 1969.