Saad Salem Khalfalla. “Contributions of Sir William Petty to the History of Economic Thought and Political Economy”. Al-imad Journal of Humanities and Applied Sciences (AJHAS) 2, no. 2 (September 21, 2026): 902–906. Accessed September 27, 2026. https://al-imadjournal.ly/index.php/ajhas/article/view/244.