Citazione Stile APA (7a Edizione)

Newman, R. B., Garmong, J. E., & Hatry, H. P. (1991). Maintenance contracting. Transportation Research Board.

Citazione stile Chigago Style (17a edizione)

Newman, Robert B., J. E. Garmong, e Harry P. Hatry. Maintenance Contracting. Washington, D.C: Transportation Research Board, 1991.

Citatione MLA (9a ed.)

Newman, Robert B., et al. Maintenance Contracting. Transportation Research Board, 1991.