APA-viite

S.Shihabudeen. A study of the effectiveness of programmed instruction in learning english as a second language by secondary school pupils.

Chicago-tyylinen lähdeviittaus

S.Shihabudeen. A Study of the Effectiveness of Programmed Instruction in Learning English as a Second Language by Secondary School Pupils.

MLA-viite

S.Shihabudeen. A Study of the Effectiveness of Programmed Instruction in Learning English as a Second Language by Secondary School Pupils.