APA (7th ed.) Citation

Sandra Downing & Moore , P. J. Tenor Clef is Easy. Dr Downing Music.

Chicago Style (17th ed.) Citation

Sandra Downing and Peter J. Moore. Tenor Clef Is Easy. England: Dr Downing Music.

MLA (9th ed.) Citation

Sandra Downing and Peter J. Moore. Tenor Clef Is Easy. Dr Downing Music.

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