Walker, W. G. (1965). The principal at work: Case studies in school administration. Queensland University Press.
Citace podle Chicago (17th ed.)Walker, W. G. The Principal at Work: Case Studies in School Administration. St. Lucia, Qld.: Queensland University Press, 1965.
Citace podle MLA (8th ed.)Walker, W. G. The Principal at Work: Case Studies in School Administration. Queensland University Press, 1965.
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