Cita APA (7th ed.)

Hardwick, E. R. (1993). Introduction to chemistry (Extended edition.). Harcourt Brace Jovanovich.

Cita Chicago (17th ed.)

Hardwick, E. Russell. Introduction to Chemistry. Extended edition. San Diego: Harcourt Brace Jovanovich, 1993.

Cita MLA (9th ed.)

Hardwick, E. Russell. Introduction to Chemistry. Extended edition. Harcourt Brace Jovanovich, 1993.