Cita APA (7a ed.)

Leavitt, H. M. (1986). Spain, the United States and the defense of the west. [s.n.].

Cita Chicago Style (17a ed.)

Leavitt, Horace M. Spain, the United States and the Defense of the West. [S.l.]: [s.n.], 1986.

Cita MLA (9a ed.)

Leavitt, Horace M. Spain, the United States and the Defense of the West. [s.n.], 1986.