APA

Edwards E. H., Langrish B. & Houghton K. (2009). The encyclopedia of the horse. New York: DK.

Chicago

Edwards Elwyn Hartley, Langrish Bob and Houghton Kit. 2009. The encyclopedia of the horse. New York: DK.

Harvard

Edwards E. H., Langrish B. and Houghton K. (2009). The encyclopedia of the horse. New York: DK.

MLA

Edwards Elwyn Hartley, Langrish Bob and Houghton Kit. The encyclopedia of the horse. New York: DK. 2009.