APA (7th ed.) Citation

Villegas, B. M. (1981). Managerial economics (Rev. ed.). Sinag-Tala.

Chicago Style (17th ed.) Citation

Villegas, Bernardo M. Managerial Economics. Rev. ed. Manila: Sinag-Tala, 1981.

MLA (9th ed.) Citation

Villegas, Bernardo M. Managerial Economics. Rev. ed. Sinag-Tala, 1981.