Daniel, edited by Thomas M.; Robbins, Frederick C. Polio 1st. Rochester, N.Y.: University of Rochester Press. 1999: 11 [2016-03-04]. ISBN 9781580460668. (原始内容存档于2014-11-05).
Daniel, edited by Thomas M.; Robbins, Frederick C. Polio 1st. Rochester, N.Y.: University of Rochester Press. 1999: 11 [2016-03-04]. ISBN 9781580460668. (原始内容存档于2014-11-05).