Cita APA (7th ed.)

Villegas, B. M. (1971). Economics of an industry. Center for Research and Communication.

Cita Chicago (17th ed.)

Villegas, Bernardo M. Economics of an Industry. [Manila]: Center for Research and Communication, 1971.

Cita MLA (9th ed.)

Villegas, Bernardo M. Economics of an Industry. Center for Research and Communication, 1971.