by William F. Ruddiman
Internet/Online
William F. Ruddiman ISBN-10: 1-4292-0688-8 ISBN-13: 978-1-4292-0688-4
Loose-leaf
William F. Ruddiman ISBN-10: 1-4292-3961-1 ISBN-13: 978-1-4292-3961-5
Paperback
Past and Future
William F. Ruddiman ISBN-10: 0-7167-8490-4 ISBN-13: 978-0-7167-8490-6