Agrawal, A. A. (2019). Advances in understanding the long-term population decline of monarch butterflies. Proc Natl Acad Sci U S A.
استشهاد بنمط شيكاغوAgrawal, Anurag A. "Advances in Understanding the Long-term Population Decline of Monarch Butterflies." Proc Natl Acad Sci U S A 2019.
MLA استشهادAgrawal, Anurag A. "Advances in Understanding the Long-term Population Decline of Monarch Butterflies." Proc Natl Acad Sci U S A 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.