APA (7th ed.) Citation

L. D. Erasmus. (1960). Chronic bronchitis and emphysema. AOSIS.

Chicago Style (17th ed.) Citation

L. D. Erasmus. Chronic Bronchitis and Emphysema. AOSIS, 1960.

MLA (9th ed.) Citation

L. D. Erasmus. Chronic Bronchitis and Emphysema. AOSIS, 1960.

Warning: These citations may not always be 100% accurate.