Cita APA (7a ed.)

Smetacek, V., Scharek, R., & Nöthig, E. (1990). Seasohal and regional variation in the pelagial and its relationship to the life cycle of krill. Springer Verlag.

Cita Chicago Style (17a ed.)

Smetacek, V., R. Scharek, y E-M Nöthig. Seasohal and Regional Variation in the Pelagial and Its Relationship to the Life Cycle of Krill. Berlin: Springer Verlag, 1990.

Cita MLA (8a ed.)

Smetacek, V., et al. Seasohal and Regional Variation in the Pelagial and Its Relationship to the Life Cycle of Krill. Springer Verlag, 1990.