Composition (teaching of) ; ESP; English for academic purposes; EAP ; Academic language; Scientific language ; Self-disclosure; Self-presentation (communication research) ; Identität und Sprache; Identity and language; Fremdheit und Sprache; Estrangement and language; Sprache und Integration; Integration und Sprache; Language and identity ; Zweitspracherwerb (Textproduktion) ; Second language acquisition (text production) ; Text production (second language acquisition) ; Self-reference ; English ; Polish