Cita APA (7a ed.)

Johnson, J., Doyle, J. H., & Fahey, S. H. (1908). Johnson's first steps in language. A.B. Caldwell.

Cita Chicago Style (17a ed.)

Johnson, Juliette, Julia H. Doyle, y Sara H. Fahey. Johnson's First Steps in Language. Atlanta, GA: A.B. Caldwell, 1908.

Cita MLA (8a ed.)

Johnson, Juliette, et al. Johnson's First Steps in Language. A.B. Caldwell, 1908.