APA (7th ed.) Citation

Barth, K., & Eberhard, R. (1939). Inleiding in den Heidelbergschen Catechismus. Callenbach.

Chicago Style (17th ed.) Citation

Barth, Karl, and Rolf Eberhard. Inleiding in Den Heidelbergschen Catechismus. Nijkerk: Callenbach, 1939.

MLA (9th ed.) Citation

Barth, Karl, and Rolf Eberhard. Inleiding in Den Heidelbergschen Catechismus. Callenbach, 1939.

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