Presidential form of government in Pakistan was introduced under the Constitution of ____?

Presidential form of government in Pakistan was introduced under the Constitution of ____?

پاکستان میں صدارتی طرز حکومت ____ کے آئین کے تحت متعارف کرایا گیا تھا؟
Explanation
The Constitution of 1962 envisaged a Federal State with a Presidential form of government,

with the National Assembly at the center and thProvincial Assemblies in the Provinces
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The Constitution of 1962 was promulgated by President Ayub Khan
on 1 March 1962 and finally came into effect on 8 June 1962.

Urdu and Bengali Was The Official Language 

Ayoub Khan was made chief of martial law after this abrogation

Ayoub Khan enforced the new constitution on 8th June 1962

Yahiya Khan abrogated the 1962 constitution and became CMLA