APA (7th ed.) Citation

Doval Santos, E. Z., Elgar, E. S., Eguico, J., & Santos, E. Z. D. (1977). Advanced algebra. Era Philippines, Inc.

Chicago Style (17th ed.) Citation

Doval Santos, Esther Z., Emma S. Elgar, Josefina Eguico, and Esther Z. Doval Santos. Advanced Algebra. Metro-Manila, Philippines: Era Philippines, Inc, 1977.

MLA (9th ed.) Citation

Doval Santos, Esther Z., et al. Advanced Algebra. Era Philippines, Inc, 1977.