APA (7th ed.) Citation

Högel, G. (1999). U-boat emblems of World War II. Schiffer Publishing.

Chicago Style (17th ed.) Citation

Högel, Georg. U-boat Emblems of World War II. Atglen, Pa.: Schiffer Publishing, 1999.

MLA (9th ed.) Citation

Högel, Georg. U-boat Emblems of World War II. Schiffer Publishing, 1999.

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