Trese, Leo J., author
Notre Dame, 1964
Buku Teks
Backman, Fredrik, author
Noura Books, 2016
Buku Teks
Teresa Stoppani, Giorgio Ponzo, George Themistokleous.
Routledge, 2017
Buku Teks
Smidak, Emil F.
Avenira Foundation for Research of Human Society, 1996
Buku Teks
Harry Siswanto, author
W.W. Norton & Company. INC, 1961
Buku Teks