Cita APA

Schwartz, B. M., Wilson, J. H., & Goff, D. M. An easyguide to research design and SPSS (Second edition.).

Chicago Edition Citation

Schwartz, Beth M., Janie H. Wilson, i Dennis M. Goff. An Easyguide to Research Design and SPSS. Second edition.

Cita MLA

Schwartz, Beth M., et al. An Easyguide to Research Design and SPSS. Second edition.