No author listed. “Australia - Communicable Diseases Intelligence (incorporating the National Microbiological Laboratory Reporting Service) - Bulletin 21. 6-19 October 1977 - Whole Issue”. Communicable Diseases Intelligence, vol. 1, Oct. 1977, pp. 1-13, https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/3286.