Bogdan, Robert, author
John Wiley & Sons, 1973
Buku Teks
Nusa Putra, author
Rajawali, 2012
Buku Teks
Haris Herdiansyah, author
Salemba Empat, 2010
Buku Teks
Moleong, Lexy J., author
Remaja Rosdakarya, 2005
Buku Teks
Moleong, Lexy J., author
Remaja Rosdakarya, 2001
Buku Teks