APA (7th ed.) Citation

Frankel, E. (1964). DNA-ladder of Life / by Edward Frankel. World's Work.

Chicago Style (17th ed.) Citation

Frankel, Edward. DNA-ladder of Life / by Edward Frankel. World's Work, 1964.

MLA (9th ed.) Citation

Frankel, Edward. DNA-ladder of Life / by Edward Frankel. World's Work, 1964.

Warning: These citations may not always be 100% accurate.