APA(7版)引用形式

De Leon, H. S. (1989). Textbook on the new Philippine constitution (1989 ed.). Rex Book Store.

Chicagoスタイル(17版)引用形式

De Leon, Hector S. Textbook on the New Philippine Constitution. 1989 ed. Quezon City, Manila: Rex Book Store, 1989.

MLA(9版)引用形式

De Leon, Hector S. Textbook on the New Philippine Constitution. 1989 ed. Rex Book Store, 1989.