Anna Sikorzynska

Choices Upper Intermediate Class CDs 1-6

Michael Harris i Anna Sikorzynska

Opportunities Global Pre-Int Language Powerbook Pack

Hanna Mrozowska, Patricia Reilly, et al.

Opportunities Global Elementary Language Powerbook Pack

Andrew Fairhurst, Oliva Johnston, et al.

Choices Elementary eText Students Book Access Card

Michael Harris i Anna Sikorzynska

Choices Upper Intermediate Value Pack Indonesia

Michael Harris, Anna Sikorzynska, et al.

Challenges Student Book 4 Global

Michael Harris, David Mower, et al.

Opportunities Global Intermediate Class CD New Edition

David Mower, Anna Sikorzynska, et al.

Opportunities Global Elementary Class CD New Edition

Michael Harris, David Mower, et al.

Opportunities Global Elementary Language Powerbook NE

Oliva Johnston, Christina Ruse, et al.

Opportunities Global Intermediate Students' Book NE

David Mower, Anna Sikorzynska, et al.

Opportunities Global Upper-Int Language Powerbook Pack

Patricia Reilly, Michael Harris, et al.

Choices Intermediate Class CDs 1-6

Michael Harris i Anna Sikorzynska

Choices Pre-Intermediate Class CDs 1-6

Michael Harris i Anna Sikorzynska

Challenges (Egypt) 2 Students Book for pack

Michael Harris, Anna Sikorzynska, et al.

Challenges (Egypt) 1 Students Book for pack

Anna Sikorzynska, Melanie Williams, et al.

Opportunities Global Beginner Class CD NE

Michael Harris, David Mower, et al.

New Challenges 4 Students' Book

Michael Harris, David Mower, et al.

New Challenges 2 Students' Book

David Mower, Anna Sikorzynska, et al.

Challenges Student Book 2 Global

Michael Harris, David Mower, et al.