APA (7th ed.) Citation

Peiris, T. C. (2020). Activity based oral English key stage 1: : grade 1 my activity book. National Institute of Education.

Chicago Style (17th ed.) Citation

Peiris, T. Chandrika. Activity Based Oral English Key Stage 1: : Grade 1 My Activity Book. Maharagama: National Institute of Education, 2020.

MLA (9th ed.) Citation

Peiris, T. Chandrika. Activity Based Oral English Key Stage 1: : Grade 1 My Activity Book. National Institute of Education, 2020.