Finis les pieds plats.
MLA
lettriste, Internationale. Finis Les Pieds Plats. Internationale lettriste?, 1952. https://collections.library.yale.edu/catalog/10079777.
APA, 6th edition
lettriste, I. (1952). Finis les pieds plats. [Announcements (AAT), broadsides (AAT), Protest literature--France--Paris--1952.--local, Typescripts]. Internationale lettriste?, https://collections.library.yale.edu/catalog/10079777.