Cita APA (7th ed.)
Grun, B. The timetables of history: A horizont linkage of people and events / Bernard Grun (3a edición.).
Cita Chicago (17th ed.)
Grun, Bernard. The Timetables of History: A Horizont Linkage of People and Events / Bernard Grun. 3a edición.
Cita MLA (9th ed.)
Grun, Bernard. The Timetables of History: A Horizont Linkage of People and Events / Bernard Grun. 3a edición.
Atenció: Aquestes cites poden no estar 100% correctes.