Friedrich, Carl J.
Rinehart, 1948
Buku Teks
Suggs, Robert Carl
The American Museum of Natural History, 1961
Buku Teks
Schmitz, Carl A.
Mouton & Co. Publishers, 1963
Buku Teks
Gulf Publishing Company, 1998
Buku Teks
Nelson, Carl A.
McGraw-Hill, 2000
Buku Teks