APA (7th ed.) Citation

Barth, K. (1964). The Heidelberg Catechism for Today. The Epworth Press.

Chicago Style (17th ed.) Citation

Barth, Karl. The Heidelberg Catechism for Today. The Epworth Press, 1964.

MLA (8th ed.) Citation

Barth, Karl. The Heidelberg Catechism for Today. The Epworth Press, 1964.

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