APA

Sinclair H. M., . (1934). A preface to economic history. New York: Harper.

Chicago

Sinclair Huntly Macdonald, . 1934. A preface to economic history. New York: Harper.

Harvard

Sinclair H. M., . (1934). A preface to economic history. New York: Harper.

MLA

Sinclair Huntly Macdonald, . A preface to economic history. New York: Harper. 1934.