APA citiranje

Black, C., & Hart, T. (2017). Variation in the phenology of Pygoscelis penguins.

Chicago Style (17th ed.) Citation

Black, C., and T. Hart. Variation in the Phenology of Pygoscelis Penguins. 2017.

MLA citiranje

Black, C., and T. Hart. Variation in the Phenology of Pygoscelis Penguins. 2017.