Stapleton, W. H. (1903). Suggestions for a grammar of "Bangala": (The "linqua franca" of the Upper Congo), with 2000 words and many useful phrases. Baptist Missionary Society.
Čikaški stil citiranja (17. izdanje)Stapleton, Walter H. Suggestions for a Grammar of "Bangala": (The "Linqua Franca" of the Upper Congo), with 2000 Words and Many Useful Phrases. Yakusu, Stanley Falls: Baptist Missionary Society, 1903.
MLA način citiranja (8. izdanje)Stapleton, Walter H. Suggestions for a Grammar of "Bangala": (The "Linqua Franca" of the Upper Congo), with 2000 Words and Many Useful Phrases. Baptist Missionary Society, 1903.
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