(1988). World Of Wonders A Trip Through Numbers Starr Ockenga, Eileen Doolittle, Photography By Starr Ockenga. Houghton Mifflin Company.
Chicago-referens (17:e uppl.)World Of Wonders A Trip Through Numbers Starr Ockenga, Eileen Doolittle, Photography By Starr Ockenga. Houghton Mifflin Company, 1988.
MLA-referens (8:e uppl.)World Of Wonders A Trip Through Numbers Starr Ockenga, Eileen Doolittle, Photography By Starr Ockenga. Houghton Mifflin Company, 1988.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.