Kelmendi, Libron, ir Sadije Rexhepi. „The Progressive: a cross-linguistic study of English and Albanian“. Respectus Philologicus, no. 47 (52) (balandžio 22, 2025): 66–80. žiūrėta rugpjūčio 28, 2026. https://journals.vu.lt/respectus-philologicus/article/view/37447.