APA (7th ed.) Citation

Roik, U. (1986). Zeitgeber-IS.

Chicago Style (17th ed.) Citation

Roik, Ulrich. Zeitgeber-IS. Frankfurt/Oder, 1986.

MLA (8th ed.) Citation

Roik, Ulrich. Zeitgeber-IS. 1986.

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