Muir, Robert
Henry Frowde, Hodder & Stoughton, 1921
Buku Teks SO
edited by Robert Berkow
Merck Sharp & Dohme Research Laboratories, 1987
Buku Teks SO
Pfeifer Gunter, Rolf Ramcke, Joachim Achtziger, Konrad Zilch
Birkhauser, 2001
Buku Referensi
edited by Kenneth R. Niswander
Litle, Brown, 1983
Buku Teks SO
Browning, Carl H.
Oxford University Press, 1937
Buku Referensi