APA (7th ed.) Citation

Purcell, H. O God, Thou art my God: Full anthem for four voices. Novello & Company.

Chicago Style (17th ed.) Citation

Purcell, Henry. O God, Thou Art My God: Full Anthem for Four Voices. [London, England]: Novello & Company.

MLA (9th ed.) Citation

Purcell, Henry. O God, Thou Art My God: Full Anthem for Four Voices. Novello & Company.

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