Freitag, R., & Bradley, M. C. (2006). Biographical Sources in the Sciences--Life, Earth and Physical Sciences (1989-2006). LC Science Tracer Bullet. TB 06-4.
Chicago Style (17th ed.) CitationFreitag, Ruth, and Michelle Cadoree Bradley. Biographical Sources in the Sciences--Life, Earth and Physical Sciences (1989-2006). LC Science Tracer Bullet. TB 06-4. 2006.
MLA (9th ed.) CitationFreitag, Ruth, and Michelle Cadoree Bradley. Biographical Sources in the Sciences--Life, Earth and Physical Sciences (1989-2006). LC Science Tracer Bullet. TB 06-4. 2006.
Warning: These citations may not always be 100% accurate.