See the chapter on "La littérature populaire: du roman Harlequin au roman policier." There is a brief discussion of changes in romance, followed by some details about the history of Harlequin. There is then a discussion of romance which draws heavily on/discusses the findings of Bettinotti (1986), Snitow (1979), Modleski (1980) and Radway (1983 and 1984) and then (after a briefer discussion of the detective novel) compares romance with detective fiction.
The edition I've linked to is from 2011.
See the chapter on "La littérature populaire: du roman Harlequin au roman policier." There is a brief discussion of changes in romance, followed by some details about the history of Harlequin. There is then a discussion of romance which draws heavily on/discusses the findings of Bettinotti (1986), Snitow (1979), Modleski (1980) and Radway (1983 and 1984) and then (after a briefer discussion of the detective novel) compares romance with detective fiction.