Renshaw, Wallace W.
Gregg Publishing, 1937
Buku Teks
Diehl, Marcy Otis
Elsevier Saunders, 2012
Buku Teks
Meredith, Geoffrey G.
PPM, 2002
Buku Teks
Onong Uchjana Effendy
[publisher not identified], [date of publication not identified]
Buku Teks
Buku Teks