Shartle, C. L. (1952). Occupational information, its development and application. Prentice-Hall.
Chicago Style (17th ed.) CitationShartle, Carroll Leonard. Occupational Information, Its Development and Application. Englewood Cliffs, NJ: Prentice-Hall, 1952.
MLA (9th ed.) CitationShartle, Carroll Leonard. Occupational Information, Its Development and Application. Prentice-Hall, 1952.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.