एपीए उद्धरण

Barcalow, E., & Emmett Barcalow. (2001). Open questions: An introduction to philosophy. Australia,Belmont, CA: Wadsworth/Thompson Learning.

शिकागो स्टाइल उद्धरण

Barcalow, Emmett, और Emmett Barcalow. Open Questions: An Introduction to Philosophy. Australia,Belmont, CA: Wadsworth/Thompson Learning, 2001.

एमएलए उद्धरण

Barcalow, Emmett, और Emmett Barcalow. Open Questions: An Introduction to Philosophy. Australia,Belmont, CA: Wadsworth/Thompson Learning, 2001.