Gerdener, G. B. A. (1958). Recent developments in the South African mission field. Marshall, Morgan & Scott.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGerdener, Gustav Bernhard August. Recent Developments in the South African Mission Field. London: Marshall, Morgan & Scott, 1958.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGerdener, Gustav Bernhard August. Recent Developments in the South African Mission Field. Marshall, Morgan & Scott, 1958.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.