1. (1997) Microbiology: Dynamics and Diversity, Saunders College Publishers, Fort Worth, TX.
2. , (1999) Biology of Prokaryotes, George Thieme Verlag, Stuttgart, Germany.
3. (2000) The Physiology and Biochemistry of Prokaryotes, 2nd Ed., Oxford University Press, New York.
4. The use of advance organizers in the learning and retention of meaningful verbal material.