Davey, Ant; Koopman, Adrian (2000). "Adulphe Delegorgue's Vocabulaire de la Langue Zoulouse". South African Journal of African Languages. 20 (2): 134–147. doi:10.1080/02572117.2000.10587420. S2CID171373302.
Koopman, Adrian (2018). "Zulu bird names: A progression over the decades (I)". South African Journal of African Languages. 38 (3): 261–267. doi:10.1080/02572117.2018.1518029. S2CID166217046.
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Davey, Ant; Koopman, Adrian (2000). "Adulphe Delegorgue's Vocabulaire de la Langue Zoulouse". South African Journal of African Languages. 20 (2): 134–147. doi:10.1080/02572117.2000.10587420. S2CID171373302.
Koopman, Adrian (2018). "Zulu bird names: A progression over the decades (I)". South African Journal of African Languages. 38 (3): 261–267. doi:10.1080/02572117.2018.1518029. S2CID166217046.