Cita APA (7th ed.)

Vasquez, E. E., & Africa, L. T. (1977). Manual in "mathematics of investments". Textbook Development Committee, De La Salle University.

Cita Chicago (17th ed.)

Vasquez, Eleanita E., i Leonida T. Africa. Manual in "Mathematics of Investments". Manila: Textbook Development Committee, De La Salle University, 1977.

Cita MLA (9th ed.)

Vasquez, Eleanita E., i Leonida T. Africa. Manual in "Mathematics of Investments". Textbook Development Committee, De La Salle University, 1977.