APA

Coffin R. P. T., . (1948). Collected poems. New York: Macmillan.

Chicago

Coffin Robert P Tristram, . 1948. Collected poems. New York: Macmillan.

Harvard

Coffin R. P. T., . (1948). Collected poems. New York: Macmillan.

MLA

Coffin Robert P Tristram, . Collected poems. New York: Macmillan. 1948.