Helberg, J. L. (ca. 1969). Nahum, Jonah, Lamentations, Isaiah 51-53 (a possibility for establishing a connection) [Book]. Ou-Testamentiese Werkgemeenskap in Suid-Afrika: Meeting, 12 (1969) 46-55, 12 (1969) 46-55.
Chicago Manual of Style 17th edition (author-date)Helberg, J. L. 1969. „Nahum, Jonah, Lamentations, Isaiah 51-53 (a possibility for establishing a connection)“. Book. Ou-Testamentiese Werkgemeenskap in Suid-Afrika: Meeting, Nr. 12 (1969) 46-55: 12 (1969) 46-55.
Springer - Basic (author-date)Helberg JL (1969) Nahum, Jonah, Lamentations, Isaiah 51-53 (a possibility for establishing a connection). Ou-Testamentiese Werkgemeenskap in Suid-Afrika: Meeting 12 (1969) 46-55
Springer - Lecture Notes in Computer Science1.Helberg, J.L.: Nahum, Jonah, Lamentations, Isaiah 51-53 (a possibility for establishing a connection). Ou-Testamentiese Werkgemeenskap in Suid-Afrika: Meeting. 12 (1969) 46-55 (1969).
DIN 1505-2 (author-date, Deutsch) - standard superseded by ISO-690Helberg, J. L.: Nahum, Jonah, Lamentations, Isaiah 51-53 (a possibility for establishing a connection). In: Ou-Testamentiese Werkgemeenskap in Suid-Afrika: Meeting (1969), Nr. 12 (1969) 46-55, S. 12 (1969) 46-55