Cita APA (7th ed.)

Timberlake, K. (1992). Chemistry: Karen Timberlake (Fourth Edition.). HarperCollins Publishers.

Cita Chicago (17th ed.)

Timberlake, Karen. Chemistry: Karen Timberlake. Fourth Edition. New York: HarperCollins Publishers, 1992.

Cita MLA (9th ed.)

Timberlake, Karen. Chemistry: Karen Timberlake. Fourth Edition. HarperCollins Publishers, 1992.