Kroes, M. J., Watkins, W. A., & Delp, F. (1993). Aircraft: Maintenance and repair (6th ed.). New York: Glencoe.
Παραπομπή Chicago StyleKroes, Michael J., William A. Watkins, and Frank Delp. Aircraft: Maintenance and Repair. 6th ed. New York: Glencoe, 1993.
Παραπομπή MLAKroes, Michael J., William A. Watkins, and Frank Delp. Aircraft: Maintenance and Repair. 6th ed. New York: Glencoe, 1993.
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