The Sanborn speller :
for primary, intermediate and grammar grades /
by William J. Pelo and Edith S. Gardner.

APA Citation

Pelo, W. Joseph., Gardner, E. S. (1911). The Sanborn speller: for primary, intermediate and grammar grades. Boston: B.H. Sanborn.

MLA Citation

Pelo, William Joseph, 1871-, and Edith S Gardner. The Sanborn Speller: for Primary, Intermediate And Grammar Grades. Boston: B.H. Sanborn, 1911.

Warning: These citations may not always be complete (especially for serials).