No author listed. “National Microbiological Laboratory Reporting Service - Bulletin 7. 25 March to 7 April 1977 - Whole Issue”. Communicable Diseases Intelligence 1 (April 7, 1977): 1–6. Accessed April 22, 2026. https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/3272.