Tuhia he whiti kōrero poto i runga i te kaupapa e whai ake nei:  Ka whiwhi te tangata X i tētahi tohu Ph.D.
Ae ra, anei he rarangi poto: E hiahia ana a Cross kia noho hei tohunga mātauranga nā te mea e aroha ana ia ki te ako me te rangahau. He pai hoki ki a ia te whakaako me te whakapuaki i tana matauranga ki ētahi atu. Kia riro ai ia hei kairangahau, me whiwhi tohu Ph.D. a Cross.