Hayes, D., & Whitson, B. A. (2014). Preface. Pioneer Bioscience Publishing Company.
Chicago Style aipamenaHayes, Don, and Bryan A. Whitson. Preface. Pioneer Bioscience Publishing Company, 2014.
MLA aipamenaHayes, Don, and Bryan A. Whitson. Preface. Pioneer Bioscience Publishing Company, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.