एपीए उद्धरण

Ernesto, F. (1995). International Conference on the Service Sector: Productivity and Grewth. Physica Verlag.

शिकागो स्टाइल उद्धरण

Ernesto, Felli. International Conference on the Service Sector: Productivity and Grewth. Heidelberg: Physica Verlag, 1995.

एमएलए उद्धरण

Ernesto, Felli. International Conference on the Service Sector: Productivity and Grewth. Physica Verlag, 1995.