Pellmyr, O., & Leebens-Mack, J. (1999). Forty million years of mutualism: Evidence for Eocene origin of the yucca-yucca moth association. The National Academy of Sciences.
استشهاد بنمط شيكاغوPellmyr, Olle, و James Leebens-Mack. Forty Million Years of Mutualism: Evidence for Eocene Origin of the Yucca-yucca Moth Association. The National Academy of Sciences, 1999.
MLA استشهادPellmyr, Olle, و James Leebens-Mack. Forty Million Years of Mutualism: Evidence for Eocene Origin of the Yucca-yucca Moth Association. The National Academy of Sciences, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.