APA (7th ed.) Citation

Helios: . Helios-Zonnestraal. Lauf (Pegnitz).

Chicago Style (17th ed.) Citation

Helios: . Helios-Zonnestraal. Lauf (Pegnitz).

MLA (8th ed.) Citation

Helios: . Helios-Zonnestraal. Lauf (Pegnitz).

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