BibTeX:
@incollection{LadyBlomfield1940,
  author = {Lady Blomfield},
  title = {His Last Days},
  booktitle = {The Chosen Highway},
  year = {1940},
  publisher = {Bahá'í Publishing Trust},
}

APA:
Lady Blomfield. (1940). His Last Days. In *The Chosen Highway*. Bahá'í Publishing Trust.

MLA:
Lady Blomfield. "His Last Days." *The Chosen Highway*, Bahá'í Publishing Trust, 1940.

Chicago:
Lady Blomfield. "His Last Days." In *The Chosen Highway*, Bahá'í Publishing Trust, 1940.