Fairchild, Fred Rogers, author
NEw York, N.Y. : Macmillan, 1939,
Buku Teks
Fairchild, Fred Rogers, author
Macmillan, 1939
Buku Teks
Fairchild, Fred Rogers, author
Macmillan, 1989
Buku Teks
Nordin, J.A., author
Prentice-Hall, 1954
Buku Teks
Thomson, Edgar
Thomson Nelson and Sons Ltd. , 1949
Buku Teks