NELSON, G. E., ROBINSON, G. G., & BOOLOOTIAN, R. A. (1970). Fundamental concepts of biology.-- Ed.2. John Wiley and Sons.

NELSON, Gideo E., Gerald G. ROBINSON, and Richard A. BOOLOOTIAN. Fundamental Concepts of Biology.-- Ed.2. New York: John Wiley and Sons, 1970.

NELSON, Gideo E., et al. Fundamental Concepts of Biology.-- Ed.2. John Wiley and Sons, 1970.