APA (7th ed.) Citation

Horrigan, P. A. (1970). The Chalenge of chemistry. McGraw Hill.

Chicago Style (17th ed.) Citation

Horrigan, Philip A. The Chalenge of Chemistry. McGraw Hill, 1970.

MLA (8th ed.) Citation

Horrigan, Philip A. The Chalenge of Chemistry. McGraw Hill, 1970.

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