Cita APA (7a ed.)

Planting trees in school grounds and the celebration of arbor day.

Cita Chicago Style (17a ed.)

Planting Trees in School Grounds and the Celebration of Arbor Day. Washington : Gouvernement Printing office, 1885.

Cita MLA (8a ed.)

Planting Trees in School Grounds and the Celebration of Arbor Day.