APA (7e ed.) Bronvermelding

Pasco-Font, A., Gallardo, J., & Fry, V. (1999). Household demand for telephone services in Peru. Grade.

Chicago (17e ed.) Bronvermelding

Pasco-Font, Alberto, Jose Gallardo, en Valerie Fry. Household Demand for Telephone Services in Peru. Lima: Grade, 1999.

MLA (9e ed.) Bronvermelding

Pasco-Font, Alberto, et al. Household Demand for Telephone Services in Peru. Grade, 1999.