American Society of Training Directors. (1961). Selected bibliographies covering twenty-seven training subjects. s.n.
Citace podle Chicago (17th ed.)American Society of Training Directors. Selected Bibliographies Covering Twenty-seven Training Subjects. Madison, Wis: s.n, 1961.
Citace podle MLA (9th ed.)American Society of Training Directors. Selected Bibliographies Covering Twenty-seven Training Subjects. s.n, 1961.
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