Gaya APA

Spandau, U., Heimann, H. (2018). Practical Handbook for Small-Gauge Vitrectomy (2nd ed. 2018). New york: Springer International Publishing.

Gaya MLA

Spandau, Ulrich., Heimann, Heinrich. "Practical Handbook for Small-Gauge Vitrectomy". 2nd ed. 2018 New york: Springer International Publishing, 2018. Text.