APA

Sullivan M., . (1971). Our Times 1900 - 1925. New York: Charles Scribners's Sons.

Chicago

Sullivan Mark, . 1971. Our Times 1900 - 1925. New York: Charles Scribners's Sons.

Harvard

Sullivan M., . (1971). Our Times 1900 - 1925. New York: Charles Scribners's Sons.

MLA

Sullivan Mark, . Our Times 1900 - 1925. New York: Charles Scribners's Sons. 1971.