Gaya APA

Donald, C. (1987). The new illustrated science and invention encyclopedia : Volume 12 marine propulsion mortar . Westport, Conn.: H.S. Stuttman Inc.

Gaya MLA

Donald, CLARKE.. "The new illustrated science and invention encyclopedia : Volume 12 marine propulsion mortar". Westport, Conn.: H.S. Stuttman Inc, 1987. Text.