Citação norma APA

Helle, S., & Lummaa, V. (2013). A trade-off between having many sons and shorter maternal post-reproductive survival in pre-industrial Finland. The Royal Society.

Citação norma Chicago

Helle, Samuli, and Virpi Lummaa. A Trade-off between Having Many Sons and Shorter Maternal Post-reproductive Survival in Pre-industrial Finland. The Royal Society, 2013.

Citação norma MLA

Helle, Samuli, and Virpi Lummaa. A Trade-off between Having Many Sons and Shorter Maternal Post-reproductive Survival in Pre-industrial Finland. The Royal Society, 2013.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.