Footnote
23 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.
Bibliography entry
The bibliography must include both the original source and the secondary source. Using the example above the two entries will be:
Costello, Bonnie. Marianne Moore: Imaginary Possessions. Cambridge, MA: Harvard University Press, 1981.
Zukofsky, Louis. "Sincerity and Objectification: With Special Reference to the Work of Charles Reznikoff." Poetry 37, no. 5 (February 1931): 272-85.