APA

Hartmann F. H., . (196). Relations of nations. : Macmillan Company of Canada, Toronto.

Chicago

Hartmann Frederick H, . 196. Relations of nations. : Macmillan Company of Canada, Toronto.

Harvard

Hartmann F. H., . (196). Relations of nations. : Macmillan Company of Canada, Toronto.

MLA

Hartmann Frederick H, . Relations of nations. : Macmillan Company of Canada, Toronto. 196.