Citazione Stile APA (7a Edizione)

Johnson, M. R. (1994). Lexicon of South African stratigraphy. South African Committee for Stratigraphy : Council for Geoscience, Geological Survey of South Africa [distributor].

Citazione stile Chigago Style (17a edizione)

Johnson, M. R. Lexicon of South African Stratigraphy. Pretoria: South African Committee for Stratigraphy : Council for Geoscience, Geological Survey of South Africa [distributor], 1994.

Citatione MLA (8a ed.)

Johnson, M. R. Lexicon of South African Stratigraphy. South African Committee for Stratigraphy : Council for Geoscience, Geological Survey of South Africa [distributor], 1994.