Ann N. Crigler, editor
The University of Michigan Press, 2001
Buku Teks SO
Cole, Luella
Holt Rinehart and Winston, 1959
Buku Teks SO
Putera Anarta Mardanadi
Fakultas Teknik Universitas Indonesia, 2008
UI - Skripsi Open
Cole, Luella
Holt, Rinehart and Winston, 1963
Buku Teks SO
Garrison, Karl C.
Prentice-Hall, 1975
Buku Teks SO