When referencing multiple works from the same author with a combination of no date, date and in press, the following order should be used:
date (in chronological order)
Brown & Jones (n.d., 2016, 2018, in press).
(APA manual, 2020, p. 263).
In press means that the work has been accepted for publication but has not yet been published.
The advice of the Nursing Council of New Zealand is :