Philippine Islands. Bureau of Education. (1914). School-ground improvements: A four weeks' course for teachers of all grades. Bureau of printing.
Cita Chicago (17th ed.)Philippine Islands. Bureau of Education. School-ground Improvements: A Four Weeks' Course for Teachers of All Grades. Manila: Bureau of printing, 1914.
Cita MLA (9th ed.)Philippine Islands. Bureau of Education. School-ground Improvements: A Four Weeks' Course for Teachers of All Grades. Bureau of printing, 1914.
Atenció: Aquestes cites poden no estar 100% correctes.