- Author: Robert G. Allen, Mark Victor Hansen
- Language: English
- Year: 2011
- Author: Morgan Kaufmann Publishers., Allen Mark, Cervo Dalton
- Language: English
- Year: 2020
- Author: Allen Mark, Sekida Kazuki
- Language: English
- Year: 2003
- Author: Allen Mark, Babbitt Bob, Fitzgerald Matt, Scott Dave
- Language: English
- Year: 2011
- Author: Allen Mark, Maffetone Philip
- Language: English
- Year: 2010
- Author: Allen Mark
- Language: English
- Year: 2012
- Author: Allen Mark
- Language: English
- Year: 2003
IELTS Speaking
pdf
- Author: Allen Mark.
- Language: English
- Author: Grant Allen Mark Murphy
- Language: English
- Year: 2
- Author: Allen Mark W., Jones Terry L
- Language: English
- Year: 2014