1) A Vocabulary of the Dialects of Mashonaland in the New Orthography by B. H. Barnes,
    vol. 7 no. 2, April 1934, pp. 242-243.

2) The Stewart Xhosa Readers: I Incwadi ZesiXhosa Zabafundi edited by W. G. Bennie,
    vol. IX no. 1, January 1936, pp. 132-133.

3) Mekgwa le Melao ya Batswana edited by I. Schapera, vol. XII no. 3, July 1939, p. 387.

4) Iintsomi, Bantu Folk Stories by R. M. Agar-O'Connell, vol. XII no. 4, October 1939, p. 513.

5) Swahili Grammar (including Intonation) by E. O. Ashton, vol. XV no. 1, January 1945.