APA (7th ed.) Citation

Hophan, F. (1990). "Wissen, was am Medium möglich ist".

Chicago Style (17th ed.) Citation

Hophan, Franz. "Wissen, Was Am Medium Möglich Ist". 1990.

MLA (9th ed.) Citation

Hophan, Franz. "Wissen, Was Am Medium Möglich Ist". 1990.

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