The book The Secret of Family Happiness (published by the Watchtower Bible and Tract Society of New York, Inc.) contains many helpful Bible principles that custodial grandparents can use in rearing their grandchildren.
Grāmatā Ģimenes laimes noslēpums, ko izdevusi Watchtower Bible and Tract Society of New York, Inc., ir daudz noderīgu Bībeles principu, ko vecvecāki var izmantot mazbērnu audzināšanā.