ebrary, Inc, Sheets, D. J., Bradley, D. B., & Hendricks, J. (2006). Enduring questions in gerontology. Springer Pub. Co..
Chicago Style (17th ed.) Citationebrary, Inc, Debra J. Sheets, Dana Burr Bradley, and Jon Hendricks. Enduring Questions in Gerontology. New York: Springer Pub. Co., 2006.
MLA引文ebrary, Inc, et al. Enduring Questions in Gerontology. Springer Pub. Co., 2006.
警告:這些引文格式不一定是100%准確.