Diedrich, W. M., & Bangert, J. (1980). Articulation Learning. College-Hill Pr.
Cita Chicago (17th ed.)Diedrich, William M., i Jeff Bangert. Articulation Learning. Houston, Taxas: College-Hill Pr, 1980.
Cita MLA (9th ed.)Diedrich, William M., i Jeff Bangert. Articulation Learning. College-Hill Pr, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.