Ong, W. J. (1952). Heidelberg Castle in Heidelberg, Germany.
Chicago Style (17th ed.) CitationOng, Walter J. Heidelberg Castle in Heidelberg, Germany. 1952.
MLA引文Ong, Walter J. Heidelberg Castle in Heidelberg, Germany. 1952.
警告：这些引文格式不一定是100％准确.
APA引文