Acquired cryptorchidism is frequent in infancy and childhood.

MLA

Wohlfahrt-Veje, Christine, et al. “Acquired Cryptorchidism Is Frequent in Infancy and Childhood.” International Journal of Andrology, vol. 32, no. 4, Aug. 2009, pp. 423–28. EBSCOhost, https://doi.org/10.1111/j.1365-2605.2008.00946.x.

APA

Wohlfahrt-Veje, C., Boisen, K. A., Boas, M., Damgaard, I. N., Kai, C. M., Schmidt, I. M., Chellakooty, M., Suomi, A.-M., Toppari, J., Skakkebæk, N. E., & Main, K. M. (2009). Acquired cryptorchidism is frequent in infancy and childhood. International Journal of Andrology, 32(4), 423–428. https://doi.org/10.1111/j.1365-2605.2008.00946.x

Chicago

Wohlfahrt-Veje, Christine, Kirsten A. Boisen, Malene Boas, Ida N. Damgaard, Claudia M. Kai, Ida M. Schmidt, Marla Chellakooty, et al. 2009. “Acquired Cryptorchidism Is Frequent in Infancy and Childhood.” International Journal of Andrology 32 (4): 423–28. doi:10.1111/j.1365-2605.2008.00946.x.