Cita APA (7th ed.)

Parel, C. P. (1979). Data analysis and interpretation (Trial ed.). Philippine Social Science Council.

Cita Chicago (17th ed.)

Parel, Cristina P. Data Analysis and Interpretation. Trial ed. Quezon City: Philippine Social Science Council, 1979.

Cita MLA (9th ed.)

Parel, Cristina P. Data Analysis and Interpretation. Trial ed. Philippine Social Science Council, 1979.