एपीए उद्धरण

Tyrell, D. J., Bulla, L. A., Andrews, R. E., Kramer, K. J., Davidson, L. I., & Nordin, P. (1981). Comparative biochemistry of entomocidal parasporal crystals of selected Bacillus thuringiensis strains.

शिकागो स्टाइल उद्धरण

Tyrell, D J., L A. Bulla, R E. Andrews, K J. Kramer, L I. Davidson, और P. Nordin. Comparative Biochemistry of Entomocidal Parasporal Crystals of Selected Bacillus Thuringiensis Strains. 1981.

एमएलए उद्धरण

Tyrell, D J., et al. Comparative Biochemistry of Entomocidal Parasporal Crystals of Selected Bacillus Thuringiensis Strains. 1981.