Hill, Marilyn Louise (1993) Recurrent headaches in a pediatric population: the applicability of a cognitive-behavioural treatment program for preadolescents.
Groenewald (1993:14) o bontsha pharologano e jaana: • • • Thitokgang e lebagane le letlalo la • thulaganyo Thitokgang e golaganya dithekeniki • gore di lebagane.