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توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Crowther, S. (1970). Journal of an expedition up the Niger and Tshadda rivers: Undertaken by Maegregor Laird in connection with the British Government in 1854 (Second edition.). Cass.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Crowther, Samuel. Journal of an Expedition Up the Niger and Tshadda Rivers: Undertaken by Maegregor Laird in Connection with the British Government in 1854. Second edition. London: Cass, 1970.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Crowther, Samuel. Journal of an Expedition Up the Niger and Tshadda Rivers: Undertaken by Maegregor Laird in Connection with the British Government in 1854. Second edition. Cass, 1970.