Willian R. <br/><br/>
The british honduras expedition, 1961 :   A progress report. 

 - Toronto-CA :   The university,   1963. 
 - páginas 10-16 :   ilustraciones blanco y negro 
 - Irregular 
 - (1962) 
 - Annual Art and Archaeology division the royal ontario museum university of Toronto   .
 - The royal ontario museum university of Toronto. .