Quirk, James P.
McGraw-Hill, 1968
Buku Teks
Baumol, William J., author
Mass. Harvard University Press, 1952
Buku Teks
Lerner, Abba P. (Abba Ptachya), 1903-1982, author
Macmillan, 1958
Buku Teks
Lerner, Abba P. (Abba Ptachya), 1903-1982, author
Macmillan, 1958
Buku Teks
Nath, S. K.
Augustus M. Kelley, 1969
Buku Teks