Elonka, Stephen Michael
McGraw-Hill, 1981
Buku Referensi
Elonka, Stephen Michael
McGraw-Hill, 1981
Buku Referensi
Harding, Bertita
Indianapolis The Bobbs-Merrill, 1937
Buku Teks
Billy, A.
Paris Flammarion 1944
Buku Teks
Grunwald, Constantin De
Paris Hachette [t.th.]
Buku Teks