APA (7th ed.) Citation

Burmester, H. S. The Seven rays made visual. De Vorss PublishersS.L].

Chicago Style (17th ed.) Citation

Burmester, Helen S. The Seven Rays Made Visual. De Vorss PublishersS.L].

MLA (9th ed.) Citation

Burmester, Helen S. The Seven Rays Made Visual. De Vorss PublishersS.L].

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