- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2011
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2011
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2011
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2011
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2011
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2011
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2009
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2011
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2009
- Author: Sam Ruby Dave Thomas David Heinemeier Hansson
- Language: English
- Year: 2009