Lingual House、Michael Rost(著)、「Strategies in Speaking」です。
「Taking up where Basics in Speaking leaves off and continuing in a simple style with a slightly higher language level, Strategies in Speaking offers systematic practice and communication tasks for students.」(Amazon)
初心者向けの主に会話向けのテキストブックです。かなり古くてFirst published 1998, Reprinted 1998のものです。