Librero, S. G. E., & Salem, R. R. (2022). Students' conceptual understanding of ecosystems. College of Social Sciences, University of the Philippines Cebu.
Chicago-viite (17. p.)Librero, Sharlaine Gaye E., ja Rickyn R. Salem. Students' Conceptual Understanding of Ecosystems. Cebu City: College of Social Sciences, University of the Philippines Cebu, 2022.
MLA-viite (9. p.)Librero, Sharlaine Gaye E., ja Rickyn R. Salem. Students' Conceptual Understanding of Ecosystems. College of Social Sciences, University of the Philippines Cebu, 2022.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.