Ash, R. (2007). Whitaker's World of facts. Penguin Books India.
シカゴスタイル引用形Ash, Russell. Whitaker's World of Facts. New Delhi: Penguin Books India, 2007.
MLA引用形式Ash, Russell. Whitaker's World of Facts. Penguin Books India, 2007.
警告: この引用は必ずしも正確ではありません.