Roffman, H. (1996). Three: Howard Roffman. Gmünder.
Cita Chicago (17th ed.)Roffman, Howard. Three: Howard Roffman. Berlin: Gmünder, 1996.
Cita MLA (8th ed.)Roffman, Howard. Three: Howard Roffman. Gmünder, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.