Blackwell, E. (1852). The laws of life with special reference to the physical education of girls. G. P. Putnam.
Lua i Stíl Chicago (17ú heag.)Blackwell, Elizabeth. The Laws of Life with Special Reference to the Physical Education of Girls. New-York: G. P. Putnam, 1852.
Lua MLA (8ú heag.)Blackwell, Elizabeth. The Laws of Life with Special Reference to the Physical Education of Girls. G. P. Putnam, 1852.
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