एपीए उद्धरण

Hariharan Poonjar. (1997). Marxisttudarsanam: Chila prasnangal. Chintha.

शिकागो स्टाइल उद्धरण

Hariharan Poonjar. Marxisttudarsanam: Chila Prasnangal. Thiruvanathapuram: Chintha, 1997.

एमएलए उद्धरण

Hariharan Poonjar. Marxisttudarsanam: Chila Prasnangal. Chintha, 1997.