Chen, C. (1987). Scientific and technical information sources (2nd ed.). MIT Press.
Cita Chicago (17th ed.)Chen, Ching-chih. Scientific and Technical Information Sources. 2nd ed. Cambridge, Mass: MIT Press, 1987.
Cita MLA (9th ed.)Chen, Ching-chih. Scientific and Technical Information Sources. 2nd ed. MIT Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.