Citations not in PubMed or a citation manager will need to be added to your My Bibliography manually. To do this, go to the My NCBI main menu by clicking on "My NCBI" in the top right corner of the page. You will see a box for your bibliography, which will contain citations that you have already added from PubMed. For delegates, the bibliography will show up in your list of Collections.
Click on "Manage My Bibliography" and then the "Add Citation" button in the menu of the bibliography management page.
Choose "Manual Citation" from the drop-down menu, or another manual entry format as appropriate.
Enter all information available and click "Add Citation" to save.
You will see the new citation appear in your bibliography along with an Edit link in case the informtion was added incorrectly.