SPSS and SAS programming for the testing of mediation models.

MLA

Dudley, William N., et al. “SPSS and SAS Programming for the Testing of Mediation Models.” Nursing Research, vol. 53, no. 1, Jan. 2004, pp. 59–62. EBSCOhost, https://doi.org/10.1097/00006199-200401000-00009.

APA

Dudley, W. N., Benuzillo, J. G., & Carrico, M. S. (2004). SPSS and SAS programming for the testing of mediation models. Nursing Research, 53(1), 59–62. https://doi.org/10.1097/00006199-200401000-00009

Chicago

Dudley, William N, Jose G Benuzillo, and Mineh S Carrico. 2004. “SPSS and SAS Programming for the Testing of Mediation Models.” Nursing Research 53 (1): 59–62. doi:10.1097/00006199-200401000-00009.