APA সাইটেশন

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

শিকাগো স্টাইলে সাইটেশন

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

এমএলএ সাইটেশন

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