APA (7th ed.) Citation

Reynolds, H. R., & Prōtopapadakēs, P. E. (1948). Practical problems in soil mechanics. Lockwood.

Chicago Style (17th ed.) Citation

Reynolds, Henry R., and Petros Emm Prōtopapadakēs. Practical Problems in Soil Mechanics. London: Lockwood, 1948.

MLA (9th ed.) Citation

Reynolds, Henry R., and Petros Emm Prōtopapadakēs. Practical Problems in Soil Mechanics. Lockwood, 1948.