Sources of the Indian Constitution:

1) Government of India Act 1935:

- The federal scheme,
- Office of the Governor,
- Public Service Commissions,
- Emergency provisions administrative details.

2) British Constitution:

- Legislative procedures,
- Parliamentary form of Government,
- Rule of Law,
- Single citizenship,
- Cabinet system,
- Parliamentary privileges
- Bicameralism.

3) US Constitution:

- Fundamental Rights,
- Independent judiciary,
- Judicial review,
- Impeachment of President
- Procedure for the removal of the judges of the Supreme court and High courts and Vice President.

4) Canadian Constitution:

- Federal system,
- Federation with strong centre,
- Residuary powers with the centre.

5) Irish Constitution:

- Directive Principles of State Policy,
- The method of the presidential election,
- Nomination of members of Rajya Sabha.

6) Weimar Constitution of Germany:

- Emergency powers to be enjoyed by the Union,
- Suspension of Fundamental Rights during emergency

7) Australian Constitution:

- Freedom of inter-state trade,
- commerce and intercourse,
- concurrent list.

8) Constitution of South Africa:

- Procedure for amendment of the Constitution,
- Election of members of the Rajya Sabha.