Kaplan, Wilfred, author
Addison-Wesley, 1963
Buku Teks
Loomis, Lynn Harold, author
World Scientific Publishing Company, 2016
Buku Teks
Love, Clyde E., author
Macmillan, 1943
Buku Teks
Courant, R., author
Blackie and Son Ltd., 1960
Buku Teks
Research and Education Association, 1987
Buku Teks