Extension (corresponding to versions of other abbreviations):

RJ (People's Education Edition)? Books published by People's Education Publishing House generally refer to textbooks, referred to as People's Education Edition textbooks.

SJ (Jiangsu Education Edition) is a textbook that has been evaluated by the State Education Commission and has relevant qualifications for textbook publishing, and can be compiled and published by book publishing houses. Among them, Jiangsu Education Publishing House published a series of textbooks, referred to as Jiangsu Education Edition.

NJ (Oxford Edition) This is a branch or cooperative relationship of Oxford University Press in China.

Beijing Curriculum Reform Edition

N version (audio tape)

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