Quotations within quotations
When a quotation includes another quotation, put double quote-marks outermost, and single within:
According to Robertson, "when Haversham claims 'the theory is universal', he is disregarding two critical limitations".
Quotations within quotations
When a quotation includes another quotation, put double quote-marks outermost, and single within:
According to Robertson, "when Haversham claims 'the theory is universal', he is disregarding two critical limitations".