APA (7th ed.) Citation

Pérez de Azepeitia, J., Wegener, P., Negri, P., & Clewing, C. Sumurun.

Chicago Style (17th ed.) Citation

Pérez de Azepeitia, Javier, Paul Wegener, Pola Negri, and Carl Clewing. Sumurun.

MLA (9th ed.) Citation

Pérez de Azepeitia, Javier, et al. Sumurun.