- A - GENERAL BIBLIOGRAPHY
- A - sources - Pietro d'ABANO
- A - sources - ADHEMAR de Chabannes
- A - sources - Henry Cornelius AGRIPPA
- A - sources - Pierre d'AILLY
- A - sources - ALBERTUS MAGNUS
- A - sources - ALBUMASAR
- A - sources - ALCABITIUS
- A - sources - ALFRAGANUS
- A - sources - ALFONSO X el SABIO
- A - sources - ANDALO de'NEGRO
- A - sources - JOHANNES ANGELES (Engel)
- A - sources - ARABIC and middle-EASTERN, general
- A - sources - ARATUS LATINUS
- A - sources - ARATUS SOLENSIS
- A - sources - ARISTOTLE
- A - sources - AUGUSTINE
- A - sources - AUSONIUS
- A - sources - AVERROES
- A - sources - AVIENUS