Cita APA (7a ed.)

Gymer, R. (1973). Chemistry: An ecological approach. Harper & Row.

Cita Chicago Style (17a ed.)

Gymer, Roger. Chemistry: An Ecological Approach. New York: Harper & Row, 1973.

Cita MLA (8a ed.)

Gymer, Roger. Chemistry: An Ecological Approach. Harper & Row, 1973.