Kosta Lekanides

Oxford IB Skills and Practice: Theory of Knowledge for the IB Diploma

By Jill Rutherford, Sara Santrampurwala, Kosta Lekanides, Adam Rothwell, Roz Trudgon

Oxford IB Diploma Programme: Extended Essay Course Companion

By Kosta Lekanides

Oxford IB Diploma Programme: Extended Essay Course Companion

By Kosta Lekanides