If you filed with TurboTax CD/Download software your returns are not stored in TurboTax Online. You need to save and backup your return on your computer or thumb drive. You should have saved a copy of your .2016tax data file and also a .pdf copy of your return for your records.
To print your return please see the following TurboTax FAQ. https://ttlc.intuit.com/replies/3301609
