Dyfyniad APA
Blackburn, B., & Blackburn, D. (1986). Stress points in marriage. Word Books.
Dyfyniad Arddull Chicago
Blackburn, Bill, and Deana Blackburn. Stress Points in Marriage. Waco, Tex.: Word Books, 1986.
Dyfyniad MLA
Blackburn, Bill, and Deana Blackburn. Stress Points in Marriage. Word Books, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.