Cita APA (7th ed.)

(2009). PYP L10 The Earth's Resources single (Pearson Baccalaureate PrimaryYears Programme). Heinemann.

Cita Chicago (17th ed.)

PYP L10 The Earth's Resources Single (Pearson Baccalaureate PrimaryYears Programme). Heinemann, 2009.

Cita MLA (9th ed.)

PYP L10 The Earth's Resources Single (Pearson Baccalaureate PrimaryYears Programme). Heinemann, 2009.

Atenció: Aquestes cites poden no estar 100% correctes.