Cita APA (7th ed.)

Fuller, E., & Davis, O. B. (1961). Four) 4 American biographies. Harcourt Brace.

Cita Chicago (17th ed.)

Fuller, Edmund, i O. B. Davis. Four) 4 American Biographies. N.Y.: Harcourt Brace, 1961.

Cita MLA (8th ed.)

Fuller, Edmund, i O. B. Davis. Four) 4 American Biographies. Harcourt Brace, 1961.