Nicholas, A. K. (1983). The book of the German shepherd dog. Neptune City, N.J: T.F.H. Publications.
Trích dẫn kiểu ChicagoNicholas, Anna Katherine. The Book of the German Shepherd Dog. Neptune City, N.J: T.F.H. Publications, 1983.
MLA citiranjeNicholas, Anna Katherine. The Book of the German Shepherd Dog. Neptune City, N.J: T.F.H. Publications, 1983.
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