Cita APA

Handy, R., Moody, D. B., Perez, J., Rix, E., & Robbins, S. (2007). Astronomical Sketching: A Step-by-Step Introduction. Springer Science+Business Media, LLC.

Citación estilo Chicago

Handy, Richard., David B. Moody, Jeremy Perez, Erika Rix, and Sol Robbins. Astronomical Sketching: A Step-by-Step Introduction. New York, NY: Springer Science+Business Media, LLC, 2007.

Cita MLA

Handy, Richard., et al. Astronomical Sketching: A Step-by-Step Introduction. New York, NY: Springer Science+Business Media, LLC, 2007.