SpringerLink (Online service), Evans, J. J., Kenning, T. J., Farrell, C., & Kshettry, V. R. (2019). Endoscopic and Keyhole Cranial Base Surgery (1st ed. 2019.). Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-64379-3
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), James J. Evans, Tyler J. Kenning, Christopher Farrell, και Varun R. Kshettry. Endoscopic and Keyhole Cranial Base Surgery. 1st ed. 2019. Cham: Springer International Publishing : Imprint: Springer, 2019. https://doi.org/10.1007/978-3-319-64379-3.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Endoscopic and Keyhole Cranial Base Surgery. 1st ed. 2019. Springer International Publishing : Imprint: Springer, 2019. https://doi.org/10.1007/978-3-319-64379-3.