Cita APA (7a ed.)

Costantino, F., & Caldwell, J. (1979). Holes in time. Acclaimed Books.

Cita Chicago Style (17a ed.)

Costantino, Frank, y John Caldwell. Holes in Time. [s.l.]: Acclaimed Books, 1979.

Cita MLA (9a ed.)

Costantino, Frank, y John Caldwell. Holes in Time. Acclaimed Books, 1979.