O Heiliger Geist o heiliger Gott, org, H-Dur - BSB Mus.ms. 4815: [p.122, heading:] Mehr ex H dur. [means the title of the chorale on p.120].
Chicago Style (17th ed.) CitationO Heiliger Geist O Heiliger Gott, Org, H-Dur - BSB Mus.ms. 4815: [p.122, Heading:] Mehr Ex H Dur. [means the Title of the Chorale on P.120].
MLA (9th ed.) CitationO Heiliger Geist O Heiliger Gott, Org, H-Dur - BSB Mus.ms. 4815: [p.122, Heading:] Mehr Ex H Dur. [means the Title of the Chorale on P.120].
Warning: These citations may not always be 100% accurate.