APA (7th ed.) Citation

National Availability Survey, Inc. (1980). The manual of professional career fields (Rev. ed.). P.P.I..

Chicago Style (17th ed.) Citation

National Availability Survey, Inc. The Manual of Professional Career Fields. Rev. ed. Cincinnati, OH: P.P.I., 1980.

MLA (9th ed.) Citation

National Availability Survey, Inc. The Manual of Professional Career Fields. Rev. ed. P.P.I., 1980.