The Origin and Nature of the "Nineteen Old Poems"
https://books.google.co.uk/books/about/The_Origin_and_Nature_of_the_Nineteen_Ol.html?id=ATVkAAAAMAAJ&redir_esc=y

Classical Chinese poetry
https://pennyspoetry.fandom.com/wiki/Classical_Chinese_poetry

From Syntactic to Structural Pi-Hsing: An Important Link Between the Shih Ching and the "Nineteen Old Poems"
https://scholarsarchive.byu.edu/wcaaspapers/vol1/iss31/1/

古诗十九首 Nineteen Old Poems (in Chinese)
https://ankiweb.net/shared/info/1568154824

The Origin and Nature of the “ Nineteen Old Poems ”
https://www.semanticscholar.org/paper/The-Origin-and-Nature-of-the-%E2%80%9C-Nineteen-Old-Poems-%E2%80%9D-Hsieh-Mair/5d7405bf3432af5c65b3c65b7cfc12a167e12226

Woman in the Tower: “Nineteen Old Poems” and the Poetics of Un/concealment
https://dash.harvard.edu/bitstream/handle/1/11130514/tian_womantower.pdf?sequence=1
(some full translations in here)

Pentasyllabic Shi Poetry: The "Nineteen Old Poems"
https://experts.illinois.edu/en/publications/pentasyllabic-ishi-ipoetry-the-nineteen-old-poems
https://scholars.ln.edu.hk/en/publications/pentasyllabic-shi-poetry-the-nineteen-old-poems

Chinese Lyricism (Burton Watson) – has a lot of quality translations and analysis.
http://www.amazon.co.uk/gp/product/0231034652?ie=UTF8&tag=easasistu-21&linkCode=as2&camp=1634&creative=19450&creativeASIN=0231034652
(h/t East Asia Studies Blog for this and the next resource)

Popular Songs and Ballads of Han China (Anne Birrell) – more general insight into verse from this period.
http://www.amazon.co.uk/gp/product/0044400373?ie=UTF8&tag=easasistu-21&linkCode=as2&camp=1634&creative=19450&creativeASIN=0044400373

A German translation:
http://www.barbara-maag.de/Gushi/shijiu%20shou1.htm