APA aipamena

Zelko, H. P. (1969). The business conference: Leadership and participation. McGraw-Hill.

Chicago Style aipamena

Zelko, Harold P. The Business Conference: Leadership and Participation. New York: McGraw-Hill, 1969.

MLA aipamena

Zelko, Harold P. The Business Conference: Leadership and Participation. McGraw-Hill, 1969.