Παραπομπή APA

Loen, R. O. (1971). Manage more by doing less. McGraw Hill book co.

Παραπομπή Chicago Style

Loen, Raymond O. Manage More by Doing Less. New York: McGraw Hill book co, 1971.

Παραπομπή MLA

Loen, Raymond O. Manage More by Doing Less. McGraw Hill book co, 1971.