Shaffer, Rick
Gramercy Books, 1994
Buku Referensi
Arny, Thomas T.
McGraw-Hill, 2017
Buku Teks
Arny, Thomas T.
McGraw-Hill, Higher Education, 2004
Buku Teks
Huffer, Charles M.
Holt Rinehart & Winston, 1967
Buku Teks
Inglis, Stuart J.
John Wiley & Sons, 1967
Buku Teks