Permissions Requests From Our Authors

In certain circumstances, permissions requests are not required from authors who wish to re-use original material they have written for a Cambridge publication, provided that the subsequent use includes a full acknowledgement of the original publication, together with the copyright notice and the phrase 'Reprinted with permission'.

Permissions requests are waived if:

• The author of the work wishes to reproduce a single chapter (not exceeding 20 per cent of his/her work), journal article or shorter extract in a subsequent work (i.e. with a later publication date) of which he or she is to be the author, co-author or editor.
• The author wishes to photocopy a single chapter (not exceeding 20 per cent of his/her work as a whole), journal article or shorter extract for his/her own teaching.
• The author wishes to reproduce a single chapter (not exceeding 20 per cent of his/her published work as a whole), journal article or shorter extract on his/her personal or institution web site for teaching and research purposes. Further information about our Open Access policies for journals and books can be found by visiting the following pages:

• https://www.cambridge.org/core/services/open-access-policies/open-access-journals/green-open-access-policy-for-journals

• https://www.cambridge.org/core/services/open-access-policies/open-access-books/green-open-access-policy-for-books

For all other uses, permission is required, and the author or the author's publisher should refer to the Permissions requests page.