[T.t.] West-Java Regional Touris Development Board [t.th.]
Buku Teks
Mastra, Riadika
Jakarta : Kelompok Gramedia, 2007
Buku Referensi
Universitas Indonesia
UI Press, 2004
Buku Referensi
Martin, Samuel E.
Rutland Charles E. Tuttle Company 1992
Buku Referensi
Hove Psychology Press 1997
Buku Referensi