Copy intended to apply to both sexes should be free of gender references. Use of the second person or the plural form will help avoid awkwardness. Consider, for example, the following unacceptable sentences:
Each student should pay his fees on Monday.
Each student should pay his/her fees on Monday.
Either of the following solutions would suffice:
All students should pay their fees on Monday.
You should pay your fees on Monday.
If there is no alternative to singular pronouns in copy intended for both sexes, use he or she, him and her, etc. The use of pronouns in the form of he/she, him/her, s/he, his/her, etc. is not acceptable in university publications.