APA (7e ed.) Bronvermelding

Epstein, F. J., & Fantle Shimberg, E. (1994). Gifts of Time. Berkley Books.

Chicago (17e ed.) Bronvermelding

Epstein, Fred J., en Elaine Fantle Shimberg. Gifts of Time. New York: Berkley Books, 1994.

MLA (9e ed.) Bronvermelding

Epstein, Fred J., en Elaine Fantle Shimberg. Gifts of Time. Berkley Books, 1994.