您的具体问题的答案（在澄清了 作者应按姓名排序，图书集合按先前排序的作者名单排序后 ）是这样的：
var query = db.Books
.OrderBy(b => b.Authors.OrderBy(a => a.Name).Select(a => a.Name).FirstOrDefault());
SELECT
[Project2].[Id] AS [Id],
[Project2].[Title] AS [Title]
FROM ( SELECT
[Extent1].[Id] AS [Id],
[Extent1].[Title] AS [Title],
(SELECT TOP (1) [Project1].[Name] AS [Name]
FROM ( SELECT
[Extent2].[Name] AS [Name]
FROM [dbo].[Author] AS [Extent2]
WHERE [Extent1].[Id] = [Extent2].[BookId]
) AS [Project1]
ORDER BY [Project1].[Name] ASC) AS [C1]
FROM [dbo].[Book] AS [Extent1]
) AS [Project2]
ORDER BY [Project2].[C1] ASC
请注意，不含作者的书籍将排在第一位。
var query = db.Books
.OrderBy(b => b.Authors.Min(a => a.Name));
用sql翻译：
SELECT
[Project1].[Id] AS [Id],
[Project1].[Title] AS [Title]
FROM ( SELECT
[Extent1].[Id] AS [Id],
[Extent1].[Title] AS [Title],
(SELECT
MIN([Extent2].[Name]) AS [A1]
FROM [dbo].[Author] AS [Extent2]
WHERE [Extent1].[Id] = [Extent2].[BookId]) AS [C1]
FROM [dbo].[Book] AS [Extent1]
) AS [Project1]
ORDER BY [Project1].[C1] ASC
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