Chen, C. (1977). Scientific and technical information sources. MIT Press.
Cita Chicago (17th ed.)Chen, Ching-Chih. Scientific and Technical Information Sources. Cambridge, Mass: MIT Press, 1977.
Cita MLA (9th ed.)Chen, Ching-Chih. Scientific and Technical Information Sources. MIT Press, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.