De Paredes, Ellen Shaw, author
Wolters Kluwer, Lippincott Williams & Wilkins, 2007
Buku Referensi
Nugroho Widodo, author
Fakultas Teknik Universitas Indonesia, 1998
UI - Skripsi (Membership)
Rhodin, Johannes A.G.
"London: W B Saunders, 1963",
Buku Teks
editors by Young-Han Park
Sung Ji Hwa, 2006
Buku Referensi
Shepperd, William R., author
Barnes and Noble, 1959
Buku Referensi