APA (7th ed.) Citation

Max Klein. (1990). Croup: A primer. AOSIS.

Chicago Style (17th ed.) Citation

Max Klein. Croup: A Primer. AOSIS, 1990.

MLA (9th ed.) Citation

Max Klein. Croup: A Primer. AOSIS, 1990.

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