Cita APA (7th ed.)

Cahill, K. M. (1971). The untapped resource. Orbis Books.

Cita Chicago (17th ed.)

Cahill, Kevin M. The Untapped Resource. Maryknoll, New York: Orbis Books, 1971.

Cita MLA (9th ed.)

Cahill, Kevin M. The Untapped Resource. Orbis Books, 1971.