Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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