Steps to Reproduce:

Go to https://en.m.wikipedia.org/wiki/User:Leela52452/sandbox with Firefox for Android 68.4.1
Make sure you are logged in
tap sandbox
tap cite button
input books.google.no/books?id=PkLxAAAAMAAJ&pg=PA237&dq=%22J.+W.+Clise%22&hl=no&sa=X&ei=NTsAVIC_NMn4yQP9r4DgDQ&ved=0CDMQ6AEwBg#v=onepage&q=%22J.%20W.%20Clise%22&f=false

Actual Results:

it gives result

"Clise, James W. (1944-03). "The League's business". National Municipal Review. 33 (3): 116–116. doi:10.1002/ncr.4110330302. ISSN 0190-3799. Check date values in: |date= (help)"

Expected Results:

it must give :

Holt, Jack; Bartz, Mary R.; Lehman, Jake; Region, United States Minerals Management Service Gulf of Mexico OCS (1983). Final regional environmental impact statement, Gulf of Mexico. Dept. of the Interior, Minerals Management Service./

i believe the above behaviour is same in both sandbox and live article edit.