Ashford, Theodor Askounes
Holt, Rinehart and Winston, 1967
Buku Teks
Winter, Stephen S.
Harper & Row, 1967
Buku Teks
Martin, Alfred N., author
Lea & Febiger, 1993
Buku Teks
Krauskopf, Konrad B., author
McGraw-Hill, 2008
Buku Teks
Krauskopf, Konrad B., author
McGraw-Hill , 1960
Buku Teks