Mainstream Access Inc. (1981). The Energy job finder. Prentice-Hall.
Cita Chicago (17th ed.)Mainstream Access Inc. The Energy Job Finder. Englewood Cliffs, N.J: Prentice-Hall, 1981.
Cita MLA (9th ed.)Mainstream Access Inc. The Energy Job Finder. Prentice-Hall, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.