The principles of sociology,
by Herbert Spencer ...
APA Citation
Spencer, H., Collins, F. Howard (Frederick Howard). (1916192011920). The principles of sociology. New York: D. Appleton and company.
MLA Citation
Spencer, Herbert, 1820-1903, and F. Howard (Frederick Howard) Collins. The Principles of Sociology. New York: D. Appleton and company, 1916192011920.
Warning: These citations may not always be complete (especially for serials).