Cita APA (7th ed.)

Koo, J. H. (1994). Let's speak korean. Samji Books.

Cita Chicago (17th ed.)

Koo, John H. Let's Speak Korean. Seúl: Samji Books, 1994.

Cita MLA (9th ed.)

Koo, John H. Let's Speak Korean. Samji Books, 1994.