APA aipamena

Royal, H. F. (1976). The gentle art of interviewing and interrogation: A professional manual and guide. Prentice-Hall.

Chicago Style aipamena

Royal, Herbert F. The Gentle Art of Interviewing and Interrogation: A Professional Manual and Guide. Englewood Cliffs, N. J: Prentice-Hall, 1976.

MLA aipamena

Royal, Herbert F. The Gentle Art of Interviewing and Interrogation: A Professional Manual and Guide. Prentice-Hall, 1976.