Seaquist, Edgar O.
McGraw-Hill , 1980
Buku Teks
[research, writing, and illustrations, Charlie Wing ; editor Benjamin W. Allen]
Meredith Corporation, 1997
Buku Referensi
Better Homes and Gardens Books, 1997
Buku Teks
Carey, James
Wiley Publishing, Inc., 2000
Buku Teks
Wait, Donald
Angus & Robertson, 1971
Buku Teks