Cita APA (7a ed.)

Awdry, F., & Green, E. By Lake and Forest. s. a.

Cita Chicago Style (17a ed.)

Awdry, Frances, y Eda Green. By Lake and Forest. Kensington Sheffield.: s. a.

Cita MLA (9a ed.)

Awdry, Frances, y Eda Green. By Lake and Forest. s. a.