Cita APA (7th ed.)
Steinberg, S. H., & Paxton, J. The Statesman's Year-Book: Statistical and Historical Annual of the States of the Worlf for the Yerar 1969-1970. Macmillan.
Cita Chicago (17th ed.)
Steinberg, Sigrfid Henry, i John Paxton. The Statesman's Year-Book: Statistical and Historical Annual of the States of the Worlf for the Yerar 1969-1970. Londres, Inglaterra: Macmillan.
Cita MLA (9th ed.)
Steinberg, Sigrfid Henry, i John Paxton. The Statesman's Year-Book: Statistical and Historical Annual of the States of the Worlf for the Yerar 1969-1970. Macmillan.
Atenció: Aquestes cites poden no estar 100% correctes.