Coulson was a talented expositor and this is demonstrated in all his works such as Waves and Electricity which we made special mention of above, and also his best-selling work Valence published in 1952. Longuet-Higgins explained the clarity of Coulson's writing in the preface of the 1974 book Theories of Molecules and Solids dedicated to the memory of Coulson:
Coulson ay isang matalino expositor at ito ay demonstrated sa lahat ng kanyang mga gawa tulad ng mga waves at Elektrisidad na kung saan namin ginawa ng mga espesyal na nabanggit sa itaas, at din ang kanyang pinakamahusay na-nagbebenta ng trabaho Valence-publish sa 1952. Longuet-Higgins ipinaliwanag ang kalinawan ng Coulson ng pagsulat sa paunang salita ng 1,974 libro Theories ng molecule at Solids alay sa memorya ng Coulson: