"Formalism refers to the critical tendency that emerged during the first half of the twentieth century and devoted its attention to concentrating on literature's formal structures in an objective manner... There are three critical movements that represent a formalist approach to literature. The first movement is Russian Formalism, from the 1910s to the 1930s (which, when suppressed by the Soviets in the 1930s, was continued by members of the Prague Linguistic Circle). The second is the New Criticism, which emphasized close reading, dominant in British and American education. The third movement is Structuralism, a dominant trend in mid-century France."
Brief Overviews:
See also: Structuralism and Semiotics
Russian Formalism:
Jakobson, Roman. Language in Literature. Belknap Press, 1987.
Shklovskiĭ, Viktor. On the Theory of Prose. Translated by Shushan Avagyan, Dalkey Archive Press, 2021.
The Prague School / Prague Linguistic Circle:
New Criticism: