APA (7th ed.) Citation

Powell, P., & Timms, P. L. (1974). The chemistry of the non-metals / (by) P. Powell, P.L. Timms. Chapman and Hall.

Chicago Style (17th ed.) Citation

Powell, P., and P. L. Timms. The Chemistry of the Non-metals / (by) P. Powell, P.L. Timms. London: Chapman and Hall, 1974.

MLA (9th ed.) Citation

Powell, P., and P. L. Timms. The Chemistry of the Non-metals / (by) P. Powell, P.L. Timms. Chapman and Hall, 1974.

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