De Promontorio Bonae Spei. The Cape of Good Hope. A Latin Oration Delivered ... 1767 ... Translated and Edited by K.D. White. (With Additional Notes by G.S. Nienaber and D.H. Varley.).
Dissertatio juridica inauguralis De testimoniis Aethiopum, Chinensium aliorumque paganorum in India orientali, quam annuente deo ter opt. max. ex auctoritate rectoris magnifici Adriani van Royen,... pro gradu doctoratus ... eruditorum examini submittit Gysbertus Hemmy,... Ad diem 17, Septembris MDCCLXX. H.L.Q.S.
Oratio latina de promontorio Bonae Spei, in schola hamburgensi d. 10. aprilis 1767 publice recitata. a Giesberto Hemmy...
Dissertatio juridica inauguralis de testimoniis, Aethiopum, Chinensium aliorrumque paganorum in India orientali... pro gradu doctoratus... ad diem 17, Septembris MDCCLXX....