Pengarang : Greer, John P. - List, Alan F. - Means, Robert T. - Rodgers, George M. - Glader, Bertil - Arber, Daniel A. - Appelbaum, Frederick R. - Dispenzieri, Angela - Fehninger, Todd A. -

Pengarang : Arber, Daniel A - Rodgers, George M (editor) - Paraskevas, Frixos (editor) - Glader, Bertil (editor) - Greer, John P. - List, Alan F. - Means, Robert T. -