Shaffer, Rick
Gramercy Books, 1994
Buku Referensi
Arny, Thomas
Mosby, 1994
Multimedia
Arny, Thomas T.
McGraw-Hill, 2017
Buku Teks SO
Arny, Thomas T.
McGraw-Hill, Higher Education, 2004
Buku Teks SO
Huffer, Charles M.
Holt Rinehart & Winston, 1967
Buku Teks SO