APA (7th ed.) Citation
Pettigrew, S., & et al. Common and differential factors associated with abstinence and poly drug use among Australian adolescents.
Chicago Style (17th ed.) Citation
Pettigrew, S., and et al. Common and Differential Factors Associated with Abstinence and Poly Drug Use Among Australian Adolescents.
MLA (9th ed.) Citation
Pettigrew, S., and et al. Common and Differential Factors Associated with Abstinence and Poly Drug Use Among Australian Adolescents.
Warning: These citations may not always be 100% accurate.