Cita APA (7a ed.)

Parrington, V. L. (1930). Main currents in American thought: An interpretation of American literature from the beginnings to 1920. Harcourt, Brace and Company.

Cita Chicago Style (17a ed.)

Parrington, Vernon Louis. Main Currents in American Thought: An Interpretation of American Literature from the Beginnings to 1920. New York: Harcourt, Brace and Company, 1930.

Cita MLA (9a ed.)

Parrington, Vernon Louis. Main Currents in American Thought: An Interpretation of American Literature from the Beginnings to 1920. Harcourt, Brace and Company, 1930.