Cita APA

Gray, G., & Guppy, N. (2003). Successful Surveys: Research Methods and Practice (3rd ed.). Thomson Nelson.

Citación estilo Chicago

Gray, George, and Neil Guppy. Successful Surveys: Research Methods and Practice. 3rd ed. Scarborough: Thomson Nelson, 2003.

Cita MLA

Gray, George, and Neil Guppy. Successful Surveys: Research Methods and Practice. 3rd ed. Thomson Nelson, 2003.

Warning: These citations may not always be 100% accurate.