Cita APA (7a ed.)

Ludwig, E. E. (1988). Applied project engineering and management (2nd. ed.). Gulf.

Cita Chicago Style (17a ed.)

Ludwig, Ernest E. Applied Project Engineering and Management. 2nd. ed. Houston: Gulf, 1988.

Cita MLA (9a ed.)

Ludwig, Ernest E. Applied Project Engineering and Management. 2nd. ed. Gulf, 1988.