Origo, Iris
Giacomo, 1974
Buku Teks
Tobies, Renate, author
Springer, 2012
eBooks
Carnegie, Dale, 1888-1955, author
Apollo, [date of publication not identified]
Buku Teks
Marek, George R.
Simon and Schuster, 1951
Buku Teks
R. Soeprono
Ikatan Dokter Indonesia , 1997
Buku Teks