The UVic Writer's Guide

• Recast into the plural.

  If a writer wishes to avoid stating his opinion directly, often he will use the device of the persona.

  If writers wish to avoid stating their opinions directly, often they will use the device of the persona.

• In the case of indefinite pronouns (anybody, somebody, nobody, no one, etc) substitute her or his (her/his), he or she (he/she) for the masculine pronoun.

  Anyone who reads Ford Madox Ford's novel. . . must make up his or her mind. . .

• Alternatively, reword the sentence to avoid the problem altogether:

  Anyone who reads Ford Maddox Ford's novel. . . must decide whether. . .

Although many people still find it objectionable, there is increasing evidence that the construction "Anyone. . . their" (as in "Anyone can have their cake and eat it too") is becoming acceptable. There is something to recommend this solution--it is simple and it does not create ambiguity--but those who use it should be aware that some readers will consider the sentence grammatically incorrect.