APA (7th ed.) Citation

Heyen, W. (1991). Pterodactyl rose: Poems of ecology (1st. ed.). Time Being Books.

Chicago Style (17th ed.) Citation

Heyen, William. Pterodactyl Rose: Poems of Ecology. 1st. ed. Saint Louis, Mo.: Time Being Books, 1991.

MLA (9th ed.) Citation

Heyen, William. Pterodactyl Rose: Poems of Ecology. 1st. ed. Time Being Books, 1991.

Warning: These citations may not always be 100% accurate.