Wardiyanta
Metode penelitian pariwisata
Andi, 2006
 Buku Teks
Metode penelitian
IGAk Wardani [and others]
Universitas Terbuka, 1997
 Buku Teks SO
Mohammad Nazir
Metode penelitian
Ghalia Indonesia, 1988
 Buku Teks SO
Sulistyo-Basuki
Metode penelitian
Wedatama Widya Sastra, 2006
 Buku Teks SO
Mohammad Nazir
Metode penelitian
Ghalia Indonesia, 1999
 Buku Teks SO