Collier's new encyclopedia :
a self-revising reference work with loose-leaf features ... profusely illus., color fronts., ninety-six maps.

APA Citation

(1928). Collier's new encyclopedia: a self-revising reference work with loose-leaf features ... profusely illus., color fronts., ninety-six maps. Anniversary ed. New York: P.F. Collier & Son.

MLA Citation

Collier's New Encyclopedia: a Self-revising Reference Work With Loose-leaf Features ... Profusely Illus., Color Fronts., Ninety-six Maps. Anniversary ed. New York: P.F. Collier & Son, 1928.