APA সাইটেশন

National Institute of industrial psychology. (1927). Occupational Psychology. National Institute of industrial psychology.

শিকাগো স্টাইলে সাইটেশন

National Institute of industrial psychology. Occupational Psychology. London: National Institute of industrial psychology, 1927.

এমএলএ সাইটেশন

National Institute of industrial psychology. Occupational Psychology. National Institute of industrial psychology, 1927.