Langan EA, Nie Z, Rhodes LE (September 2010). "Melanotropic peptides: more than just 'Barbie drugs' and 'sun-tan jabs'?". The British Journal of Dermatology. 163 (3): 451–5. doi:10.1111/j.1365-2133.2010.09891.x. PMID20545686. S2CID8203334.
Langan EA, Ramlogan D, Jamieson LA, Rhodes LE (January 2009). "Change in moles linked to use of unlicensed "sun tan jab"". BMJ. 338: b277. doi:10.1136/bmj.b277. PMID19174439. S2CID27838904.
Langan EA, Nie Z, Rhodes LE (September 2010). "Melanotropic peptides: more than just 'Barbie drugs' and 'sun-tan jabs'?". The British Journal of Dermatology. 163 (3): 451–5. doi:10.1111/j.1365-2133.2010.09891.x. PMID20545686. S2CID8203334.
Langan EA, Ramlogan D, Jamieson LA, Rhodes LE (January 2009). "Change in moles linked to use of unlicensed "sun tan jab"". BMJ. 338: b277. doi:10.1136/bmj.b277. PMID19174439. S2CID27838904.
Langan EA, Nie Z, Rhodes LE (September 2010). "Melanotropic peptides: more than just 'Barbie drugs' and 'sun-tan jabs'?". The British Journal of Dermatology. 163 (3): 451–5. doi:10.1111/j.1365-2133.2010.09891.x. PMID20545686. S2CID8203334.
Langan EA, Ramlogan D, Jamieson LA, Rhodes LE (January 2009). "Change in moles linked to use of unlicensed "sun tan jab"". BMJ. 338: b277. doi:10.1136/bmj.b277. PMID19174439. S2CID27838904.