APA (7th ed.) Citation

Lessing, L. (1959). Understanding chemistry. George G. Harrap.

Chicago Style (17th ed.) Citation

Lessing, Lawrence. Understanding Chemistry. London: George G. Harrap, 1959.

MLA (9th ed.) Citation

Lessing, Lawrence. Understanding Chemistry. George G. Harrap, 1959.

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