Cita APA (7th ed.)

Howart, I. (2000). George Müller. Unilit.

Cita Chicago (17th ed.)

Howart, Irene. George Müller. Miami: Unilit, 2000.

Cita MLA (9th ed.)

Howart, Irene. George Müller. Unilit, 2000.

Atenció: Aquestes cites poden no estar 100% correctes.