APA (7th ed.) Citation

Hirako, M., Takahashi, T., Takahashi, H., Patel, O. V., & Domeki, I. Changes in plasma estrogen concentrations during the first semester.

Chicago Style (17th ed.) Citation

Hirako, Makoto, Toru Takahashi, Hitomi Takahashi, Osman V. Patel, and Ikuo Domeki. Changes in Plasma Estrogen Concentrations During the First Semester.

MLA (9th ed.) Citation

Hirako, Makoto, et al. Changes in Plasma Estrogen Concentrations During the First Semester.