APA (7th ed.) Citation

Luther, M., & Lenker, J. N. (2009). Epistle Sermons, Vol. III Trinity Sunday to Advent. Project Gutenberg.

Chicago Style (17th ed.) Citation

Luther, Martin, and John Nicholas Lenker. Epistle Sermons, Vol. III Trinity Sunday to Advent. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Luther, Martin, and John Nicholas Lenker. Epistle Sermons, Vol. III Trinity Sunday to Advent. Project Gutenberg, 2009.

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