Cita APA (7th ed.)

FIELDING, N. G., & Fielding,Jane L. (1986). Linking data. Sage.

Cita Chicago (17th ed.)

FIELDING, Nigel G., i Fielding,Jane L. Linking Data. Beverly Hills, CA: Sage, 1986.

Cita MLA (9th ed.)

FIELDING, Nigel G., i Fielding,Jane L. Linking Data. Sage, 1986.