edited by John M. Lawler and Helen Aristar Dry
Routledge, 1998
Buku Teks
by Daniel S. Cheever ... [et al.]
Addison-Wesley, 1986
Buku Teks
John Newton author
Routledge , 1992
Buku Teks
Bell, William D.
McGraw-Hill, 1957
Buku Teks
edited by J. C. M. M Moonen, H.E. Wuite-Harmsma
North-Holland, 1984
Buku Teks