The term ‘sources of law’ is used in many senses.

Here it denotes the ways in which law was made, as opposed to what may be called the literary sources, which are the historical evidence for what the law was. The sources of Roman law may be broadly classified under three heads: statutes, edicts of magistrates, and the interpretatio of the jurists.

More on the topic The term ‘sources of law’ is used in many senses.:

1. It is difficult to provide a comprehensive and finite list of the sources of Roman law, since the Roman jurists never defined the term 'source of law' and different sources were emphasized at certain periods in the history of the Roman legal system to reflect their prominence as instruments of legal reform.
2. But when law is compared with morality, it seems to be assumed that everyone knows what the second term of the comparison embraces....
3. Legal scholars use the term ‘civil law systems’ to describe the legal systems of all those nations predominantly within the historical tradition derived from Roman law as transmitted to Continental Europe through the Corpus Iuris Civilis of Emperor Justinian.[834]
4. The sources of European Union law
5. Sources of law in the Empire
6. Sources of law in the Republic
7. The sources of law
8. 77 This book is primarily concerned with the development of the classical law, more specifically, with the sources from which that law derives and with the forces which were instrumental in its development.
9. II. SOURCES OF THE LAW
10. Sources of Law
11. IX. SOURCES OF LAW
12. CONSTITUTIONES AS SOURCES OF LAW
13. Sources of law in the archaic period
14. 2 The Sources of English Law
15. Sources of Roman law
16. Sources of Roman law
17. The Sources of Roman Law
18. HISTORY AND SOURCES OF THE LAW
19. Sources of Byzantine Law
20. Leases for a fixed term