Forward, D. C. (1994). Heroes after hours: Extraordinary acts of employee volunteerism. Jossey-Bass.
Citace podle Chicago (17th ed.)Forward, David C. Heroes After Hours: Extraordinary Acts of Employee Volunteerism. San Francisco: Jossey-Bass, 1994.
Citace podle MLA (9th ed.)Forward, David C. Heroes After Hours: Extraordinary Acts of Employee Volunteerism. Jossey-Bass, 1994.
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