Cohen, Bernard P., author
Elsevier , 1975
Buku Teks
Green, Arnold W., author
McGraw-Hill, 1975
Buku Teks
1978
Buku Teks
edited by G. N. Appell and Leigh R. Wright
Cornell University, 1978
Buku Referensi
Kerbo, Harold R., author
McGraw-Hill, 2012
Buku Teks