Jaschke, H. A.
Trubner and Co. Ludgate Hill, 1882
Buku Referensi
Jaschke, H. A.
Curzon Press, 1998
Buku Referensi
Malmstrom, Jean
National Council of Teachers of English, 1963
Buku Teks
Malmstrom, Jean
National Council of Teachers of English , 1963
Buku Teks
Steel, Robert George Douglas, 1917-
McGraw-Hill, 1960
Buku Teks