Japanese (roman characters) and English.
"I have given this book the perhaps too comprehensive title 'Japenese poetry', but have excluded from it both the hokku and the poetry of the Nō plays, hoping to deal later with both these subjects. The 'uta' of the sub-title means, of course, the 'uta' par excellence, that is to say, the verse of thirty-one syllables."--Introd., p. 8.
First edition according to Johns cited below.
Johns, F.A. Bibl. of Arthur Waley, A5