A Linguistic History of Italian
Maiden, Martin§9.6 "Pronouns of address" is a good history of the development of the formal Lei / Ella, which seems to have originated from Spanish's feminine contraction usted (> vuestra merced, "your excellency"):
Pronouns of address
Tahun:
1995
Penerbit:
Routledge
Bahasa:
english
ISBN 10:
0582059283
ISBN 13:
9780582059290
ISBN:
PC1075M351994
File:
EPUB, 769 KB
IPFS:
,
english, 1995