APA (7th ed.) Citation

Joubert, P., & Johnson, M. R. (1998). Abridged lexicon of South African stratigraphy. South African Committee for Stratigraphy.

Chicago Style (17th ed.) Citation

Joubert, P., and M. R. Johnson. Abridged Lexicon of South African Stratigraphy. Pretoria: South African Committee for Stratigraphy, 1998.

MLA (9th ed.) Citation

Joubert, P., and M. R. Johnson. Abridged Lexicon of South African Stratigraphy. South African Committee for Stratigraphy, 1998.