Farrel, B. (1998). Let her know you love her. Harvest House.
Citazione stile Chigago Style (17a edizione)Farrel, Bill. Let Her Know You Love Her. Eugene, Ore.: Harvest House, 1998.
Citatione MLA (9a ed.)Farrel, Bill. Let Her Know You Love Her. Harvest House, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.