Cita APA (7th ed.)

Valencia, E. M. (1999). The fundamentals are not sound & other papers. Giraffe Books.

Cita Chicago (17th ed.)

Valencia, Ernesto M. The Fundamentals Are Not Sound & Other Papers. Quezon City: Giraffe Books, 1999.

Cita MLA (9th ed.)

Valencia, Ernesto M. The Fundamentals Are Not Sound & Other Papers. Giraffe Books, 1999.