Lily Irawati Roesma, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1988
UI - Tesis (Membership)
Pierson, Frank C.
McGraw-Hill, 1959
Buku Teks
Katakaoffset Oy, 1986
Buku Teks
Andrews, Kenneth R., author
Harvard University , 1966
Buku Teks
Fjallbrant, Nancy J., author
Clive Bingley, 1978
Buku Teks