APA Format
Walton, John. (1960).
Six explorers : Marco Polo, Christopher Columbus, Captain Cook, Captain Sturt, Dr. Livingstone, Captain Scott / by John Walton
. London :: Oxford University Press,.
MLA Format
Walton, John.
Six explorers : Marco Polo, Christopher Columbus, Captain Cook, Captain Sturt, Dr. Livingstone, Captain Scott / by John Walton
. London :: Oxford University Press,, 1960
Chicago Format
Walton, John. Six explorers : Marco Polo, Christopher Columbus, Captain Cook, Captain Sturt, Dr. Livingstone, Captain Scott / by John Walton. London :: Oxford University Press,, 1960.