APA (7th ed.) Citation

Luther, M., & Spaeth, A. (2011). Works of Martin Luther, with Introductions and Notes (Volume II). Project Gutenberg.

Chicago Style (17th ed.) Citation

Luther, Martin, and Adolph Spaeth. Works of Martin Luther, with Introductions and Notes (Volume II). Project Gutenberg, 2011.

MLA (9th ed.) Citation

Luther, Martin, and Adolph Spaeth. Works of Martin Luther, with Introductions and Notes (Volume II). Project Gutenberg, 2011.

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