BibTeX:
@incollection{JulietThompson1983,
  author = {Juliet Thompson},
  title = {Your Heart Teaches},
  booktitle = {The Diary of Juliet Thompson},
  year = {1983},
}

APA:
Juliet Thompson. (1983). Your Heart Teaches. In *The Diary of Juliet Thompson*.

MLA:
Juliet Thompson. "Your Heart Teaches." *The Diary of Juliet Thompson*, 1983.

Chicago:
Juliet Thompson. "Your Heart Teaches." In *The Diary of Juliet Thompson*, 1983.