GORDON., Neufeld,. Hold on to your kids : why parents need to matter more than peers. 1. vyd. New York: Ballantine Books xvi, 296 pages s. Dostupné online. ISBN9780375760280. OCLC57625634
neufeldinstitute.org
» Who We Are. neufeldinstitute.org [online]. [cit. 2018-03-28]. Dostupné online. (anglicky)
worldcat.org
GORDON., Neufeld,. Hold on to your kids : why parents need to matter more than peers. 1. vyd. New York: Ballantine Books xvi, 296 pages s. Dostupné online. ISBN9780375760280. OCLC57625634