@incollection{Tan12, author = {√úner Tan}, title = {Serum Free Testosterone and Estradiol Levels in Perceptual-Verbal and Spatial Abilities;Differences in Sex and Hand Preference}, booktitle = {Sex Hormones}, publisher = {IntechOpen}, address = {Rijeka}, year = {2012}, editor = {Raghvendra K. Dubey}, chapter = {3}, doi = {10.5772/25538}, url = {https://doi.org/10.5772/25538} }