Hobbs, A. H. (1942). Differentials in internal migration. University of Pennsylvania.
Chicago Style (17th ed.) CitationHobbs, Albert Hoyt. Differentials in Internal Migration. Philadelphia: University of Pennsylvania, 1942.
MLA引文Hobbs, Albert Hoyt. Differentials in Internal Migration. University of Pennsylvania, 1942.
警告:这些引文格式不一定是100%准确.