Mercado, C. (2013). Grandparent issues. IN past perfect parenting [column]. Smart Parenting.
Citazione stile Chigago Style (17a edizione)Mercado, Chary. "Grandparent Issues. IN Past Perfect Parenting [column]." Smart Parenting 2013.
Citatione MLA (9a ed.)Mercado, Chary. "Grandparent Issues. IN Past Perfect Parenting [column]." Smart Parenting, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.