BibTex format
@inbook{Savolainen:2016:10.1007/978-3-319-16999-6_3403-1,
author = {Savolainen, V and Hodgson, J},
booktitle = {Encyclopedia of Evolutionary Psychological Science},
doi = {10.1007/978-3-319-16999-6_3403-1},
title = {Evolution of Homosexuality},
url = {http://dx.doi.org/10.1007/978-3-319-16999-6_3403-1},
year = {2016}
}