- Endorphins in Mental Health ResearchEarl Usdin, William E. Bunney Jr. et al.
- Transmitter biochemistry of human brain tissuePeter Riederer, Earl Usdin
- Clinical pharmacology in psychiatryEarl Usdin, John M. Davis
- Pharmacology of BenzodiazepinesEarl Usdin
- Function and Regulation of Monoamine EnzymesEarl Usdin
- Serotonin and behaviorEarl Usdin