References
- 1950 . Smog Questionnaire , Committee on Air Pollution . Los Angeles County Medical Association
- February 1957 . Summarization of Responses to Smog Questionnaires Sent to Members of the Los Angeles County Medical Association February , Los Angeles County Air Pollution Control District, Research Division
- 1961 . Physicians’ Environmental Health Survey; A Poll of Medical Opinion Los Angeles Los Angeles County Medical Association and Tuberculosis and Health Association of Los Angeles County
- California Penal Code, Section 372a (Enacted in 1907), Spitting in Public Places
- California Health and Safety Code, Section 24198, et sequentes (Stewart Bill)
- Los Angeles County Air Pollution Control District: Rule 157 (Adopted June 20, 1955)
- Los Angeles County Air Pollution Control District, Rule 62, Sulfur Contents of Fuels, (adopted 1958 and amended March 16, 1961)
- Los Angeles County Air Pollution Control District, Rule 62.1 (adopted Jan 14, 1964)
- Los Angeles County Air Pollution Control District, Rule 62, Subsection a