APA (7th ed.) Citation

Marker, R. L. (1991). Euthanasia: Killing or caring? Life Cycle Books.

Chicago Style (17th ed.) Citation

Marker, Rita L. Euthanasia: Killing or Caring? Lewiston, NY ; Toronto, Ontario: Life Cycle Books, 1991.

MLA (9th ed.) Citation

Marker, Rita L. Euthanasia: Killing or Caring? Life Cycle Books, 1991.