Yap, J. P., Jr. (2015). School gradens: Beneficial to schoolchildren and the environment. Agriculture.
Chicago-viite (17. p.)Yap, Julio P., Jr. "School Gradens: Beneficial to Schoolchildren and the Environment." Agriculture 2015.
MLA-viite (9. p.)Yap, Julio P., Jr. "School Gradens: Beneficial to Schoolchildren and the Environment." Agriculture, 2015.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.