APA (7th ed.) Citation

Ewald, W. (1934). Rheinische Heraldik. Schwann.

Chicago Style (17th ed.) Citation

Ewald, Wilhelm. Rheinische Heraldik. Düsseldorf: Schwann, 1934.

MLA (9th ed.) Citation

Ewald, Wilhelm. Rheinische Heraldik. Schwann, 1934.

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