Cita APA (7a ed.)

Hospitaleche, C., Pérez, L., Marenssi, S., & Reguero, M. Taphonomic analysis and paleobiological observations of Crossvallia unienwillia Tambussi et al. 2005, the Oldest Penguin from Antarctica.

Cita Chicago Style (17a ed.)

Hospitaleche, C.A, L.M Pérez, S. Marenssi, y M. Reguero. Taphonomic Analysis and Paleobiological Observations of Crossvallia Unienwillia Tambussi Et Al. 2005, the Oldest Penguin from Antarctica.

Cita MLA (8a ed.)

Hospitaleche, C.A, et al. Taphonomic Analysis and Paleobiological Observations of Crossvallia Unienwillia Tambussi Et Al. 2005, the Oldest Penguin from Antarctica.