APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

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