Gaya APA

Diedrich, W, M., Bangert, J. (1980). Articulation learning / William M. Diedrich, Jeff Bangert . Texas: .

Gaya MLA

Diedrich, William, M.., Bangert, Jeff. "Articulation learning / William M. Diedrich, Jeff Bangert". Texas: , 1980. Skripsi.