APA (7th ed.) Citation

Langenhorst, M., Sautter, B., Schmager, R., Lehr, J., Ahlswede, E., Powalla, M., . . . Paetzold, U. W. (2019). Cover Image. Progress in photovoltaics, 27(4), . https://doi.org/10.1002/pip.3138

Chicago Style (17th ed.) Citation

Langenhorst, Malte, Benjamin Sautter, Raphael Schmager, Jonathan Lehr, Erik Ahlswede, Michael Powalla, Uli Lemmer, Bryce S. Richards, and Ulrich W. Paetzold. "Cover Image." Progress in Photovoltaics 27, no. 4 (2019). https://doi.org/10.1002/pip.3138.

MLA (9th ed.) Citation

Langenhorst, Malte, et al. "Cover Image." Progress in Photovoltaics, vol. 27, no. 4, 2019, https://doi.org/10.1002/pip.3138.