APA (7th ed.) Citation
SHAFER, D., & ET AL. (1991). BIOGENETIC EFFECTS OF OPIATES.
Chicago Style (17th ed.) Citation
SHAFER, D.A, and ET AL. BIOGENETIC EFFECTS OF OPIATES. 1991.
MLA (9th ed.) Citation
SHAFER, D.A, and ET AL. BIOGENETIC EFFECTS OF OPIATES. 1991.
Warning: These citations may not always be 100% accurate.