APA (7th ed.) Citation

O'Neill, J., O'Neill, J., & Forisch, M. Agapornis fischeri.

Chicago Style (17th ed.) Citation

O'Neill, John, Jacqul O'Neill, and Martin Forisch. Agapornis Fischeri.

MLA (9th ed.) Citation

O'Neill, John, et al. Agapornis Fischeri.