APA (7th ed.) Citation

Heyn, W. Bridgekonventionen. Idea.

Chicago Style (17th ed.) Citation

Heyn, Wolf-Dietrich. Bridgekonventionen. Puchheim: Idea.

MLA (9th ed.) Citation

Heyn, Wolf-Dietrich. Bridgekonventionen. Idea.

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