Cita APA (7th ed.)

Velasquez, M. F. G. (1990). Killer quakes: Will they happen again? / Maria Fe G. Velasquez. Aida G. Velasquez.

Cita Chicago (17th ed.)

Velasquez, Maria Fe G. Killer Quakes: Will They Happen Again? / Maria Fe G. Velasquez. Metro Manila: Aida G. Velasquez, 1990.

Cita MLA (9th ed.)

Velasquez, Maria Fe G. Killer Quakes: Will They Happen Again? / Maria Fe G. Velasquez. Aida G. Velasquez, 1990.