Cita APA (7th ed.)

Yamao, Y., Gutierrez, M. S., Macam, V. R. J., Pagbilao, D. S., & Lejano, B. A. (1986). A survey of properties of concrete aggregates from different sources near metro manila. Philippine Engineering Journal.

Cita Chicago (17th ed.)

Yamao, Yoshihide, Marte SM Gutierrez, Victor R. Jr Macam, Dominador S. Pagbilao, i Bernardo A. Lejano. "A Survey of Properties of Concrete Aggregates from Different Sources Near Metro Manila." Philippine Engineering Journal 1986.

Cita MLA (9th ed.)

Yamao, Yoshihide, et al. "A Survey of Properties of Concrete Aggregates from Different Sources Near Metro Manila." Philippine Engineering Journal, 1986.