Riyanto, S. (2007). The 1 st Student's Choice Toefl [ Test Of English As A Foreign Language]: Test Strategy For Strukture and Written Expression/ Slamet Riyanto. Yogyakarta : Pustaka Pelajar.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Riyanto, Slamet. The 1 St Student's Choice Toefl [ Test Of English As A Foreign Language]: Test Strategy For Strukture and Written Expression/ Slamet Riyanto. Yogyakarta : Pustaka Pelajar, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Riyanto, Slamet. The 1 St Student's Choice Toefl [ Test Of English As A Foreign Language]: Test Strategy For Strukture and Written Expression/ Slamet Riyanto. Yogyakarta : Pustaka Pelajar, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.