Bowman, J.H.
Facet Pub, 2003
Buku Referensi
Plumb, J.H. (John Harold), 1911-
Macmillan, 1969
Buku Teks
Plumb, J.H.
The British Council by Longmans, Green, 1971
Buku Teks
Pritchard, Jack A., author
Airlangga University , 1991
Buku Teks
editors, Kenneth Kaushansky, Marshall A. Lichtman, Josef T. Prchal, Marcel Levi, Oliver W. Press, Linda J. Burns, Michael A. Caligiuri.
McGraw-Hill Education, 2016
Buku Teks