APA

Frost R. [., . (1946). Robert Frost's poems. Washington: Square press.

Chicago

Frost Robert [P], . 1946. Robert Frost's poems. Washington: Square press.

Harvard

Frost R. [., . (1946). Robert Frost's poems. Washington: Square press.

MLA

Frost Robert [P], . Robert Frost's poems. Washington: Square press. 1946.