Reference point: trans. Pliny the Younger, Letters, Book 2, Letter XX, To Calvisius
reference-type: Book
author: Firth, John B., trans.
year: 1909
title: The letters of the Younger Pliny; first series
place-published: London
publisher: Walter Scott Pub.
otx-key: Firth-1909
Full text: http://ancienthistory.about.com/library/bl/bl_text_plinyltrs1_intro.htm