To cite a source from a secondary source ("quoted in ...") is generally to be discouraged, since authors are expected to have examined the works they cite. If an original source is unavailable, however, both the original and the secondary source must be listed (p.868).
♦ 1. Louis Zukofsky, "Sincerity and Objectification," Poetry 37 (February 1931): 269, quoted in
Bonnie Costello, Marianne Moore: Imaginary Possessions (Cambridge, MA: Harvard University Press, 1981), 78. (note)
Costello, Bonnie. Marianne Moore, Imaginary Possessions. Cambridge, MA: Harvard University
Press, 1981. (Bibliography)