APA (7th ed.) Citation

Royal Opera House (London, England). (1970). Covent Garden prompt books. Micro Photo Division, Bell & Howell.

Chicago Style (17th ed.) Citation

Royal Opera House (London, England). Covent Garden Prompt Books. Wooster, Ohio: Micro Photo Division, Bell & Howell, 1970.

MLA (8th ed.) Citation

Royal Opera House (London, England). Covent Garden Prompt Books. Micro Photo Division, Bell & Howell, 1970.

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