Cita APA (7th ed.)

Dua, R. (1970). A textbook of advanced eco. theory. Loyal Bk. Depot.

Cita Chicago (17th ed.)

Dua, R. A Textbook of Advanced Eco. Theory. Meerut: Loyal Bk. Depot, 1970.

Cita MLA (9th ed.)

Dua, R. A Textbook of Advanced Eco. Theory. Loyal Bk. Depot, 1970.