1. Guinea-pig vocalizations;Berryman;Guinea-Pig Newsletter,1970
2. A Study of Guinea Pig Vocalizations: With particular reference to Mother-Infant Interactions;Berryman,1974
3. Guinea-pig vocalizations: Their structure, causation and function;Berryman;Zeitschrift für Tierpsychologie,1976
4. A developmental study of interactions between young and adult guinea pigs (Cavia porcellus);Berryman;Behaviour,1976
5. On the nature of mother-infant interactions in the guinea-pig (Cavia porcellus);Fullerton;Behaviour,1974