This is the Luah Hashanah by Rabbi Miles B. Cohen and Leslie Rubin. Other sources can be found by Googling "haftarah shabbat rosh chodesh av," including a 6 minute d'var halacha discussing the issue in detail in the audio clip here: https://www.yutorah.org/lectures/lecture.cfm/1005909/rabbi-daniel-roselaar/daily-halachah-haftarah-for-shabbat-rosh-chodesh-av/
Customer support service by UserEcho
This is the Luah Hashanah by Rabbi Miles B. Cohen and Leslie Rubin.
Other sources can be found by Googling "haftarah shabbat rosh chodesh av," including a 6 minute d'var halacha discussing the issue in detail in the audio clip here: https://www.yutorah.org/lectures/lecture.cfm/1005909/rabbi-daniel-roselaar/daily-halachah-haftarah-for-shabbat-rosh-chodesh-av/