APA (7th ed.) Citation

Sigua, F. A., Espina, C. S. P., & Litonjua, E. D. A. (1997). The Bonifacio tower: The architecture of monuments.

Chicago Style (17th ed.) Citation

Sigua, Frazier A., Cristopher Stonewall P. Espina, and Emmanuel David A. Litonjua. The Bonifacio Tower: The Architecture of Monuments. 1997.

MLA (9th ed.) Citation

Sigua, Frazier A., et al. The Bonifacio Tower: The Architecture of Monuments. 1997.