《旧唐书·列传·卷一百零四》
许孟容年少时即以文章著称，应试进士甲科，之后研究《王氏易》，登科后授秘书省校书郎。
孟容少以文词知名，举进士甲科，后究《王氏易》登科，授秘书省校书郎。
Xu Mengrong was already well-known for his essays when he was young. He sat for the imperial examination and was ranked first in the jinshi class. Afterwards, he studied the Yixiang of the Wang family. After obtaining his degree, he was granted the position of a proofreader for the Secretariat.