Robertson, J., & Stevens, K. (2014). Pyrrolizidine alkaloids. Royal Society of Chemistry.
Cita Chicago (17th ed.)Robertson, J., i K. Stevens. Pyrrolizidine Alkaloids. Royal Society of Chemistry, 2014.
Cita MLA (9th ed.)Robertson, J., i K. Stevens. Pyrrolizidine Alkaloids. Royal Society of Chemistry, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.