#1 William (William Paul) Cross 1962-, Political Parties, Representation, and Electoral Democracy in Canada. (Not aliased to William P. Cross page as all the works on that page at present are by William Cross(2)).
#2 William P. Cross 1953-, In the Twinkling of an Eye: More Accidents and Disasters from Scotland.
#3 William K. Cross, Endangered Species. (No separate author page at present.)
#4 William Cross fl. 1887, The disruption: a tale of trying times.