APA Format
Frost, Robert; Untermeyer, Louis. ([1946]).
Poems /Robert Frost ; with an introduction and commentary by Louis Untermeyer
. : Pocket,.
MLA Format
Frost, Robert; Untermeyer, Louis.
Poems /Robert Frost ; with an introduction and commentary by Louis Untermeyer
. : Pocket,, [1946]
Chicago Format
Frost, Robert; Untermeyer, Louis. Poems /Robert Frost ; with an introduction and commentary by Louis Untermeyer. : Pocket,, [1946].