Cita APA (7th ed.)

Hammerton,Sir John. Practical knowledge for all. Waverley Book.

Cita Chicago (17th ed.)

Hammerton,Sir John. Practical Knowledge for All. London: Waverley Book.

Cita MLA (9th ed.)

Hammerton,Sir John. Practical Knowledge for All. Waverley Book.

Atenció: Aquestes cites poden no estar 100% correctes.