Complete Estonian: Learn to read, write, speak and understand Estonian (Teach Yourself)

Complete Hungarian: Learn to read, write, speak and understand Hungarian (Teach Yourself)

Complete Latvian: Learn to read, write, speak and understand Latvian (Teach Yourself)

Complete Esperanto: Learn to read, write, speak and understand Esperanto (Teach Yourself)

Complete Greek: Learn to read, write, speak and understand Greek (Teach Yourself)