Franklin

MLA

Chaddock, Robert Emmet, and Frederick Emory Croxton. Exercises In Statistical Methods. Boston: Houghton Mifflin company, 1928.

APA

Chaddock, R. Emmet, & Croxton, F. Emory. (1928). Exercises in statistical methods. Boston: Houghton Mifflin company.

Chicago

Chaddock, Robert Emmet, Frederick Emory Croxton, and Robert Emmet Chaddock. Exercises In Statistical Methods. Boston: Houghton Mifflin company, 1928.