Shartle, C. L. (1952). Occupational information, its development and application (2nd ed.). Prentice-Hall.
Chicago Style (17. basım) AtıfShartle, Carroll Leonard. Occupational Information, Its Development and Application. 2nd ed. Englewood Cliffs, N. J: Prentice-Hall, 1952.
MLA (9th ed.) AtıfShartle, Carroll Leonard. Occupational Information, Its Development and Application. 2nd ed. Prentice-Hall, 1952.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..