Like eighth notes, it is possible to swing sixteenth notes by playing the first and third notes of the triplet grouping. Swung 16th rhythms are common in Funk, Hip-Hop and Rock which is influenced by these styles. Swing the 16ths in the following example, and then try some of the earlier examples in the book with swung 16ths.
Here is a melody containing swung 16th notes. This beautiful song was made famous by the great American singer Paul Robeson.