APA (7th ed.) Citation

Jarvik, E. (1950). On some Osteolepiform crossopterygians from the upper old red sandstone of Scotland. Almqvist & Wiksell.

Chicago Style (17th ed.) Citation

Jarvik, Erik. On Some Osteolepiform Crossopterygians from the Upper Old Red Sandstone of Scotland. Stockholm: Almqvist & Wiksell, 1950.

MLA (8th ed.) Citation

Jarvik, Erik. On Some Osteolepiform Crossopterygians from the Upper Old Red Sandstone of Scotland. Almqvist & Wiksell, 1950.