Elliott, Osborn, author
Harper & Brothers , 1959
Buku Teks
Ziglar, Zig, author
Heinemann Asia, 1995
Buku Teks
Rosenblatt, Joe, author
Press Porcepic, 1976
Buku Teks
Priestley, J. B. (John Boynton), 1894-1984, author
Alison & Busby, 1968
Buku Teks
Oka Rusmini, author
Gramedia Widiasarana Indonesia, 2019
Koleksi Publik