Word Interop:如何插入引文字段？

using Word = Microsoft.Office.Interop.Word;

Word.Application wordApp = new Word.Application();
Word.Document doc = wordApp.Documents.Open("C:\\Path\\To\\Your\\Document.docx");

Word.Range range = doc.Content;
range.Collapse(Word.WdCollapseDirection.wdCollapseEnd);
range.InsertParagraphAfter();
range.Collapse(Word.WdCollapseDirection.wdCollapseEnd);

Word.Range citationRange = doc.Content;
citationRange.Collapse(Word.WdCollapseDirection.wdCollapseEnd);
citationRange.InsertAfter("[");

Word.Field citationField = doc.Fields.Add(citationRange, Word.WdFieldType.wdFieldCitation, "AuthorYear", true);
citationField.ShowCodes = false;

citationRange = citationField.Result;
citationRange.InsertAfter("]");

citationRange.Collapse(Word.WdCollapseDirection.wdCollapseEnd);
citationRange.InsertParagraphAfter();

doc.Save();
doc.Close();