APA

Dangerfield S., Howell E. S., . (1971). The international encyclopedia of dogs. New York: McGraw-Hill.

Chicago

Dangerfield Stanley, Howell Elsworth S, . 1971. The international encyclopedia of dogs. New York: McGraw-Hill.

Harvard

Dangerfield S., Howell E. S., . (1971). The international encyclopedia of dogs. New York: McGraw-Hill.

MLA

Dangerfield Stanley, Howell Elsworth S, . The international encyclopedia of dogs. New York: McGraw-Hill. 1971.