GRUBB, W. Norton. Working in the Middle : Strengthening Education and Training for the Mid-Skilled Labor Force. 1. ed. San Francisco : Jossey-Bass Publ., 1996. 304 s. The Jossey-Bass Higher and Adult Education Series. ISBN 0-7879-0258-6. [Počet ex. : 1, z toho voľných 0, prezenčne 1]