APA (7th ed.) Citation

Great Britain. Statutory Instruments. Index to government orders in force. HMSO.

Chicago Style (17th ed.) Citation

Great Britain. Statutory Instruments. Index to Government Orders in Force. London: HMSO.

MLA (9th ed.) Citation

Great Britain. Statutory Instruments. Index to Government Orders in Force. HMSO.

Warning: These citations may not always be 100% accurate.