Mortera, J. S., & Pecjo, M. (2012). Natural beauty. IN People [column]: Singer, actress, star-Gretchen Espina shares to us her journey, challenges and life in the limelight. 8 Magazine.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mortera, Jeffrey S., و Marlon Pecjo. "Natural Beauty. IN People [column]: Singer, Actress, Star-Gretchen Espina Shares to Us Her Journey, Challenges and Life in the Limelight." 8 Magazine 2012.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Mortera, Jeffrey S., و Marlon Pecjo. "Natural Beauty. IN People [column]: Singer, Actress, Star-Gretchen Espina Shares to Us Her Journey, Challenges and Life in the Limelight." 8 Magazine, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.