APA aipamena

Saseendran C.K. (1990). Levels of attainment in essential biological science concept of secondary school pupils.

Chicago Style aipamena

Saseendran C.K. Levels of Attainment in Essential Biological Science Concept of Secondary School Pupils. 1990.

MLA aipamena

Saseendran C.K. Levels of Attainment in Essential Biological Science Concept of Secondary School Pupils. 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.