APA Style

ASHLOCK, P, D., MAYR, E. (1996). PRINCIPLES OF SYSTEMATIC ZOOLOGY SECOND EDITION (Kedua). Singapore: McGraw-Hill, INC..

MLA Style

ASHLOCK, PETER, D.., MAYR, ERNST. "PRINCIPLES OF SYSTEMATIC ZOOLOGY SECOND EDITION". Kedua Singapore: McGraw-Hill, INC., 1996. Text.