enter a publication to my library

I'd like to add a publication that is not yet available on Pubmed. I do not use endnote. How to add my next publication? Looking forward to your answer, Best regards, René de Coo Wens SC, Doeveren TEv, et al. Muscle MRI in Classic Infantile Pompe Disease. J Rare Dis Diagn Ther. 2015, 1:1. doi:10.21767/2380-7245.100010