Cambridge University Press, 2020
eBooks
Cambridge University Press, 2020
eBooks
edited by Harold Leitenberg
Prentice-Hall, 1976
Buku Teks
Michael J. Lambert, editor
John Wiley & Sons, 2013
Buku Teks
edited by Samuel M. Turner, Karen S. Calhoun, Henry E. Adams
John Wiley & Sons, 1992
Buku Referensi