एपीए उद्धरण

Bittel, L. R. (1978). Encyclopaedia of professional management. Grolier.

शिकागो स्टाइल उद्धरण

Bittel, Lester Robert. Encyclopaedia of Professional Management. Connecticut: Grolier, 1978.

एमएलए उद्धरण

Bittel, Lester Robert. Encyclopaedia of Professional Management. Grolier, 1978.