Budi Gunawan, author
Personal Development Training, 2006
Buku Teks
Mitra Bintibmas, 2002
Buku Teks
M. Wresniwiro, author
Mitra Bintibmas, 2002
Buku Referensi
Maxwell, John C., author
Mitra Media, 2002
Buku Teks
Lenawati, author
Rasikha Dwi Tama, 2013
Buku Teks