Green, J., & Hulbert, R. (2005). The deciduous premolars of Mammut americanum (Mammalia, Proboscidea). Journal of Vertebrate Paleontology. https://doi.org/10.1671/0272-4634(2005)025[0702:TDPOMA]2.0.CO;2
Green, Jeremy, and Richard Hulbert. 2005. “The Deciduous Premolars of Mammut Americanum (Mammalia, Proboscidea)”. Journal of Vertebrate Paleontology. https://doi.org/10.1671/0272-4634(2005)025[0702:TDPOMA]2.0.CO;2.
Green, J., and R. Hulbert. The Deciduous Premolars of Mammut Americanum (Mammalia, Proboscidea). Journal of Vertebrate Paleontology, 1 Aug. 2005, doi:10.1671/0272-4634(2005)025[0702:TDPOMA]2.0.CO;2.