APA

United States, Hupman R. D., Tienken R. L. & Library of Congress. (1968). Nomination and election of the President and Vice President of the United States, including the manner of selecting delegates to national political conventions. Washington: U.S. Govt. Print. Off.

Chicago

United States, Hupman Richard D, Tienken Robert L and Library of Congress. 1968. Nomination and election of the President and Vice President of the United States, including the manner of selecting delegates to national political conventions. Washington: U.S. Govt. Print. Off.

Harvard

United States, Hupman R. D., Tienken R. L. and Library of Congress. (1968). Nomination and election of the President and Vice President of the United States, including the manner of selecting delegates to national political conventions. Washington: U.S. Govt. Print. Off.

MLA

United States, Hupman Richard D, Tienken Robert L and Library of Congress. Nomination and election of the President and Vice President of the United States, including the manner of selecting delegates to national political conventions. Washington: U.S. Govt. Print. Off. 1968.