APA (7th ed.) Citation

Leigh, R. Number 4: Environmental Control as Part of Asthma Management. Wiley.

Chicago Style (17th ed.) Citation

Leigh, Richard. Number 4: Environmental Control as Part of Asthma Management. Wiley.

MLA (9th ed.) Citation

Leigh, Richard. Number 4: Environmental Control as Part of Asthma Management. Wiley.

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