APA
Children's Encyclopaedia Of Knowledge Book Of History, . (1970). Children's Encyclopaedia Of Knowledge Book Of History. London: Collins Sons & Co Ltd.
Chicago
Children's Encyclopaedia Of Knowledge Book Of History, . 1970. Children's Encyclopaedia Of Knowledge Book Of History. London: Collins Sons & Co Ltd.
Harvard
Children's Encyclopaedia Of Knowledge Book Of History, . (1970). Children's Encyclopaedia Of Knowledge Book Of History. London: Collins Sons & Co Ltd.
MLA
Children's Encyclopaedia Of Knowledge Book Of History, . Children's Encyclopaedia Of Knowledge Book Of History. London: Collins Sons & Co Ltd. 1970.