What is the author's style in Town and Country Lovers by Nadine Gordimer?

The omniscient narrator of "Town and Country Lovers" enables the reader to see events in the story from every major character's perspective. In Part One, the narrator describes Dr. von Leinsdorf s perceptions of the cashier the first time he sees her outside the grocery store. Later, the narrator relates Dr. von Leinsdorf s thoughts about whether or not to tip her: "It was difficult to know how to treat these people, in this country; to know what they expected." When the cashier visits his building to deliver the razor blades, she notices the ferns and the airtight hallways. That she is impressed by relatively minor luxuries tells the reader something about her own living conditions.