Gottman, J. M., & Silver, N. (1999). The seven principles for making marriage work. Crown Publishers.
Chicago-viite (17. p.)Gottman, John Mordechai, ja Nan Silver. The Seven Principles for Making Marriage Work. New York: Crown Publishers, 1999.
MLA-viite (9. p.)Gottman, John Mordechai, ja Nan Silver. The Seven Principles for Making Marriage Work. Crown Publishers, 1999.
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