Kellerman, Faye, author
Headline Feature, 1989
Buku Teks
Engels, Friedrich, 1820-1895, author
Foreign Languages Publishing House, 1954
Buku Teks
Norris, Pippa, author
Cambridge University Press, 2004
Buku Teks
Trungpa, Chogyam, author
Shambhala, 2003
Buku Teks
Cowan, James, author
Simon & Schuster, 1991
Buku Teks