M. Tan, G. Jones, G. Zhu, J. Ye i inni. Fellatio by fruit bats prolongs copulation time.. „PLoS One”. 4 (10), s. e7595, 2009. DOI: 10.1371/journal.pone.0007595. PMID: 19862320.
M. Tan, G. Jones, G. Zhu, J. Ye i inni. Fellatio by fruit bats prolongs copulation time.. „PLoS One”. 4 (10), s. e7595, 2009. DOI: 10.1371/journal.pone.0007595. PMID: 19862320.