APA (7th ed.) Citation

Lisetski, L. (2010). What was observed by Julius Planer in 1861? Condensed Matter Physics.

Chicago Style (17th ed.) Citation

Lisetski, L. "What Was Observed by Julius Planer in 1861?" Condensed Matter Physics 2010.

MLA (8th ed.) Citation

Lisetski, L. "What Was Observed by Julius Planer in 1861?" Condensed Matter Physics, 2010.

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