Cita APA (7a ed.)

Abeywickrama, A. L. S., & Siyambalagoda, W. (2009). Life competencies and civic education: Grade 9, teacher's instructional manual ; (with effect from the year 2010). Dep. of Social Sciences, National Inst. of Education.

Cita Chicago Style (17a ed.)

Abeywickrama, A. L. S., y Wimal Siyambalagoda. Life Competencies and Civic Education: Grade 9, Teacher's Instructional Manual ; (with Effect from the Year 2010). [Colombo]: Dep. of Social Sciences, National Inst. of Education, 2009.

Cita MLA (9a ed.)

Abeywickrama, A. L. S., y Wimal Siyambalagoda. Life Competencies and Civic Education: Grade 9, Teacher's Instructional Manual ; (with Effect from the Year 2010). Dep. of Social Sciences, National Inst. of Education, 2009.