Holden, J. Milnes
Pitman, 1993
Buku Teks
Weber, Max, 1864-1920, author
University of California press, 1978
Buku Teks
Sicheon munhak, 2003
Buku Teks
edited by Suzanne C. Smeltzer, Brenda G. Bare
Lippincott Willims & Wilkins, 1996
Buku Teks
Mosby Elsevier, 2006
Buku Referensi