Erricken, B. (1971). Advance general statistics. Eng. Univ. Press.
Cita Chicago (17th ed.)Erricken, B. Advance General Statistics. London: Eng. Univ. Press, 1971.
Cita MLA (9th ed.)Erricken, B. Advance General Statistics. Eng. Univ. Press, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.