Gaya APA

F., L, , J., R., C, , J. ([s.a]). The Science of Animal That Serve Humanity (3rd.ed). New York: McGraw-Hill International Book Company.

Gaya MLA

F., Lasley, , John., R., Campbell, , John. "The Science of Animal That Serve Humanity". 3rd.ed New York: McGraw-Hill International Book Company, [s.a]. Text.