Hughes, H. (2001). The Pocket Essential Spaghetti Westerns. Pocket Essentials.
芝加哥风格引文Hughes, Howard. The Pocket Essential Spaghetti Westerns. Harpenden: Pocket Essentials, 2001.
MLA引文Hughes, Howard. The Pocket Essential Spaghetti Westerns. Pocket Essentials, 2001.
警告：这些引文格式不一定是100％准确.