APA (7th ed.) Citation

De Cresce, R. P. (1989). Drug testing in the workplace. ASCP Press, American Society of Pathologists.

Chicago Style (17th ed.) Citation

De Cresce, Robert P. Drug Testing in the Workplace. Chicago: ASCP Press, American Society of Pathologists, 1989.

MLA (9th ed.) Citation

De Cresce, Robert P. Drug Testing in the Workplace. ASCP Press, American Society of Pathologists, 1989.