Elsner, P., Merk, H. F., Maibach, H. I., & Kemper, F. H. (1999). Cosmetics: Controlled efficacy studies and regulation. Springer.
Cita Chicago Style (17a ed.)Elsner, Peter, Hans F. Merk, Howard I. Maibach, y Fritz H. Kemper. Cosmetics: Controlled Efficacy Studies and Regulation. Berlin [etc.]: Springer, 1999.
Cita MLA (9a ed.)Elsner, Peter, et al. Cosmetics: Controlled Efficacy Studies and Regulation. Springer, 1999.
Precaución: Estas citas no son 100% exactas.