APA استشهاد

Gray england. (2013). Dog breeding, whelping and puppy care. WILEY-BLACKWELL.

استشهاد بنمط شيكاغو

Gray england. Dog Breeding, Whelping and Puppy Care. UK: WILEY-BLACKWELL, 2013.

MLA استشهاد

Gray england. Dog Breeding, Whelping and Puppy Care. WILEY-BLACKWELL, 2013.