Cita APA (7a ed.)

Liebig, J., & Gardner, J. Familiar letters on chemistry and its relation to commerce, physiology, and agriculture.

Cita Chicago Style (17a ed.)

Liebig, Justus, y John Gardner. Familiar Letters on Chemistry and Its Relation to Commerce, Physiology, and Agriculture. New York.

Cita MLA (8a ed.)

Liebig, Justus, y John Gardner. Familiar Letters on Chemistry and Its Relation to Commerce, Physiology, and Agriculture.