APA (7th ed.) Citation

Sverdrup, H. U., & Urseth, H. A. (2011). Luther's Small Catechism Explained in Questions and Answers. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sverdrup, H. U., and H. A. Urseth. Luther's Small Catechism Explained in Questions and Answers. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Sverdrup, H. U., and H. A. Urseth. Luther's Small Catechism Explained in Questions and Answers. Project Gutenberg, 2011.

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