APA সাইটেশন

Kahn, . A. J., & Kamerman,Sheila B. (1980). Social services in international perspective: The emergence of the sixth system. Transaction books.

শিকাগো স্টাইলে সাইটেশন

Kahn, Alfred J., এবং Kamerman,Sheila B. Social Services in International Perspective: The Emergence of the Sixth System. London: Transaction books, 1980.

এমএলএ সাইটেশন

Kahn, Alfred J., এবং Kamerman,Sheila B. Social Services in International Perspective: The Emergence of the Sixth System. Transaction books, 1980.