एपीए उद्धरण

Heller, M. (1992). Theoretical foundations of cosmology. Singapore: World Scientific.

शिकागो स्टाइल उद्धरण

Heller, Micheal. Theoretical Foundations of Cosmology. Singapore: World Scientific, 1992.

एमएलए उद्धरण

Heller, Micheal. Theoretical Foundations of Cosmology. Singapore: World Scientific, 1992.