Photograph of church records book page

The church that has records of some of my ancestors sent me photographs of pages from the church's sacramental record books. The books have no titles and no page numbers. Would this be the correct citation? 

St. Thomas the Apostle Parish (St. Thomas, Missouri), untitled sacramental record book of entries on unnumbered pages by date of incident, marriage of Benedict Groner and Anna Margaritha (sic) Otto, 19 November 1872; photograph of page with marriage entry supplied by Jenny Becker, Administrative Secretary, St. Thomas the Apostle Parish, 29 December 2020.  

Submitted byEEon Sat, 01/02/2021 - 21:22

Hello, Wayne Grover! Welcome to EE. 

Have you checked 7.19 "Church Records: Photocopies of Individual Records"? There you will find three examples, the third of which covers images supplied by a church official.