Cita APA (7a ed.)

Goddard, J. B., & Kirby, A. (1976). An introduction to factor analysis. Geo Abstracts.

Cita Chicago Style (17a ed.)

Goddard, J. B., y Andrew Kirby. An Introduction to Factor Analysis. Norwich: Geo Abstracts, 1976.

Cita MLA (9a ed.)

Goddard, J. B., y Andrew Kirby. An Introduction to Factor Analysis. Geo Abstracts, 1976.