Gaya APA

Angelos, P., Grogan, R, H. (2018). Difficult Decisions in Endocrine Surgery (1st ed. 2018). New york: Springer International Publishing.

Gaya MLA

Angelos, Peter., Grogan, Raymon, H.. "Difficult Decisions in Endocrine Surgery". 1st ed. 2018 New york: Springer International Publishing, 2018. Text.