Cita APA (7a ed.)

Echevarría, C. (1999). Goldfish: Course book 6 : [primary education]. Anaya.

Cita Chicago Style (17a ed.)

Echevarría, Carmen. Goldfish: Course Book 6 : [primary Education]. Barcelona: Anaya, 1999.

Cita MLA (9a ed.)

Echevarría, Carmen. Goldfish: Course Book 6 : [primary Education]. Anaya, 1999.