Gardner, Roy (1974). "Some Sociological and Physiological Factors Affecting the Growth of Serowe". Botswana Notes and Records. 6: 77–88. ISSN0525-5090. JSTOR40959211.
Gardner, Roy (1974). "Some Sociological and Physiological Factors Affecting the Growth of Serowe". Botswana Notes and Records. 6: 77–88. ISSN0525-5090. JSTOR40959211.