APA (7th ed.) Citation

Allan, F. D. (1969). Essentials of human embryology / by F.D. Allan (2nd ed.). O.U.P..

Chicago Style (17th ed.) Citation

Allan, Frank Duane. Essentials of Human Embryology / by F.D. Allan. 2nd ed. O.U.P., 1969.

MLA (9th ed.) Citation

Allan, Frank Duane. Essentials of Human Embryology / by F.D. Allan. 2nd ed. O.U.P., 1969.

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