Petrkis, H. M. (1991). The founder's touch: The life of Paul galvin of motorola. Chicago: Motorola University Press.
Παραπομπή Chicago StylePetrkis, Harry Mark. The Founder's Touch: The Life of Paul Galvin of Motorola. Chicago: Motorola University Press, 1991.
Παραπομπή MLAPetrkis, Harry Mark. The Founder's Touch: The Life of Paul Galvin of Motorola. Chicago: Motorola University Press, 1991.
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