Cita APA (7th ed.)

Barker, R. E., & Escarpit, R. (1973). The book hunger. UNESCO.

Cita Chicago (17th ed.)

Barker, Ronald Ernest, i Robert Escarpit. The Book Hunger. Paris: UNESCO, 1973.

Cita MLA (9th ed.)

Barker, Ronald Ernest, i Robert Escarpit. The Book Hunger. UNESCO, 1973.