Source

"Contrast the condition into which all these friendly Indians are suddenly plunged now, with their condition only two years previous: martial law now in force on all their reservations; themselves in danger of starvation, and constantly exposed to the influence of emissaries from their friends and relations, urging them to join in fighting this treacherous government that had kept faith with nobody--neither with friend nor with foe" (Jackson 178).

Example Three: Writer B has borrowed an unacknowledged phrase from Jackson and has not indicated with brackets that words have been added to the original.