APA (7th ed.) Citation

Johnson, S., & Johnson, N. (1977). Clinical trials. Blackwell Scientific.

Chicago Style (17th ed.) Citation

Johnson, Susan, and Neil Johnson. Clinical Trials. Oxford ; London: Blackwell Scientific, 1977.

MLA (9th ed.) Citation

Johnson, Susan, and Neil Johnson. Clinical Trials. Blackwell Scientific, 1977.

Warning: These citations may not always be 100% accurate.