Каким образом правильно переводить на русский тексты такого типа?

In English business letters the date is typed in full, not just in figures e.g. 2nd Apr., 1990 which is pronounced, “the second of April nineteen ninety”. The name of the month may be abbreviated: January to Jan., February to Feb., March to Mar., April to Apr., June to Jun., August to Aug., September to Sept.. October to Oct., November to Nov. December to Dec. Only May and July are written in full.