Cita APA

Sobell, M. G. (1986). Building applications using a 4GL (2nd ed.). Sobell Associates.

Citación estilo Chicago

Sobell, Mark G. Building Applications Using a 4GL. 2nd ed. Menlo Park, Calif: Sobell Associates, 1986.

Cita MLA

Sobell, Mark G. Building Applications Using a 4GL. 2nd ed. Sobell Associates, 1986.