BibTeX:
@incollection{RhyyihRabbn1969,
  author = {Rúhíyyih Rabbání},
  title = {The Homage of an Empire: The World's Tribute at the Master's Passing},
  booktitle = {The Priceless Pearl},
  year = {1969},
  publisher = {George Ronald},
  url = {https://bahai-library.com/khanum_priceless_pearl},
}

APA:
Rúhíyyih Rabbání. (1969). The Homage of an Empire: The World's Tribute at the Master's Passing. In *The Priceless Pearl*. George Ronald.

MLA:
Rúhíyyih Rabbání. "The Homage of an Empire: The World's Tribute at the Master's Passing." *The Priceless Pearl*, George Ronald, 1969.

Chicago:
Rúhíyyih Rabbání. "The Homage of an Empire: The World's Tribute at the Master's Passing." In *The Priceless Pearl*, George Ronald, 1969.