APA (7th ed.) Citation

Piekenbrock, A. (2016). Wie lange noch Solange? GPR, 13(2), .

Chicago Style (17th ed.) Citation

Piekenbrock, Andreas. "Wie Lange Noch Solange?" GPR 13, no. 2 (2016).

MLA (9th ed.) Citation

Piekenbrock, Andreas. "Wie Lange Noch Solange?" GPR, vol. 13, no. 2, 2016.