Beville, Hugh Malcolm
Lawrence Erlbaum Associates, 1985
Buku Teks
Markus, John, 1911-, author
McGraw-Hill, 1961
Buku Teks
Cazeneuve, Par Jean
Presses Universitaires de France, 1963
Buku Teks
Angus and Roberson Publishers, 1959
Buku Teks
Vane, Edwin T
Focall Press, 1994
Buku Teks