APA

Clarke D., . (1977). The encyclopedia of inventions. New York: Galahad Books.

Chicago

Clarke Donald, . 1977. The encyclopedia of inventions. New York: Galahad Books.

Harvard

Clarke D., . (1977). The encyclopedia of inventions. New York: Galahad Books.

MLA

Clarke Donald, . The encyclopedia of inventions. New York: Galahad Books. 1977.